Best '99 Suburban 6" Lift Kit

The specified product caters to owners of Chevrolet Suburbans manufactured in 1999 who desire a substantial increase in vehicle ride height. The components included in such a system typically consist of specialized springs, shocks, and related hardware designed to elevate the vehicle’s frame a precise six inches above its factory setting. For example, an individual seeking enhanced off-road capability for their 1999 Suburban might consider this modification.

Implementing such an elevation offers several potential advantages. A primary benefit is the enhanced clearance, allowing traversal of more challenging terrain and obstacles. Furthermore, it can provide the opportunity to accommodate larger diameter tires, thereby improving both aesthetic appearance and off-road performance. Historically, modifications of this type have been popular within the off-road community, evolving alongside advancements in vehicle suspension technology.

The subsequent sections will delve into aspects such as installation considerations, compatibility issues, potential impacts on vehicle handling, and key factors to consider when selecting a suitable kit. Thorough investigation of these topics is essential for ensuring a successful and safe modification of the vehicle.

1. Compatibility verification

The narrative of a 1999 Chevrolet Suburban’s transformation via a six-inch suspension lift begins not with wrenches and steel, but with meticulous verification. This initial step, a deep dive into the vehicle’s existing configuration, is the bedrock upon which the entire project stands. A seemingly universal kit may, in reality, present subtle but critical incompatibilities. These can range from variations in factory-installed axles to minor differences in frame construction across production runs. Failure to identify these discrepancies can lead to compromised installation, substandard performance, and, in extreme cases, structural damage. Imagine a scenario: a technician, eager to install the lift, overlooks a minor variance in the Suburban’s chassis. The lift kit’s components, designed for a slightly different configuration, exert undue stress on certain points, ultimately leading to premature wear and potential failure.

The importance of compatibility verification extends beyond mere fitment. It encompasses a thorough assessment of the Suburban’s existing components the health of its ball joints, the condition of its bushings, the wear on its steering linkages. Introducing a six-inch lift amplifies the forces acting upon these components, potentially exposing weaknesses that were previously dormant. Consider the case of a Suburban with worn ball joints. The installation of the lift kit, while mechanically sound, accelerates the degradation of these joints, resulting in loose steering and a hazardous driving condition. Proper verification, in this instance, would have flagged the need for ball joint replacement prior to the lift installation, mitigating the risk.

In essence, compatibility verification is not a mere formality, but a safeguard. It is the act of ensuring that the planned modification harmonizes with the specific characteristics of the 1999 Suburban, precluding unforeseen complications and ensuring the long-term integrity of both the vehicle and the lift system. It necessitates a systematic approach, involving careful measurement, detailed inspection, and, when necessary, consultation with experienced professionals. Only through this rigorous process can the promise of enhanced capability be realized without compromising safety or reliability.

2. Suspension geometry alteration

The act of elevating a 1999 Chevrolet Suburban with a six-inch suspension lift is, at its core, a fundamental reshaping of the vehicle’s intended engineering. It is a deliberate departure from the factory-specified parameters, introducing a cascade of geometric changes that ripple through the entire suspension system. Understanding these alterations is paramount; ignoring them invites compromised handling, accelerated wear, and potentially unsafe driving conditions. The factory suspension geometry, meticulously calculated by engineers, represents a delicate balance of forces and angles. Introduce a lift kit, and this equilibrium is disrupted, necessitating careful recalibration.

Change of Control Arm Angles

When a Suburban is raised, the control arms, the critical links connecting the frame to the wheel hubs, are forced into steeper angles. These altered angles diminish their mechanical advantage, impacting ride quality and handling. Consider a Suburban navigating a sharp turn after the installation of the lift kit. The steeper control arm angles resist the suspension’s natural articulation, leading to a stiffer, less compliant response. The vehicle may exhibit increased body roll and reduced grip, particularly on uneven surfaces. The factory angles are designed to work in a range where the suspension components can properly absorb the impacts, by changing the angles, the force will be apply to other components, leading to premature failure and wear.
Impact on Ball Joint and Tie Rod Angles

The angles of ball joints and tie rods, crucial for steering and suspension movement, are also significantly affected. The increased angles can lead to binding and premature wear, impacting steering precision and potentially causing component failure. Imagine a situation where a Suburban with a newly installed lift kit is driven frequently on rough terrain. The increased angles on the ball joints and tie rods amplify the stress imposed upon them with each bump and pothole. Over time, this accelerated wear can lead to looseness and play in the steering system, resulting in wandering and imprecise handling.
Driveshaft Angle Modification

The driveshaft, the component responsible for transferring power from the transmission to the axles, faces increased angles that will amplify vibrations. Its a domino effect, where the driveshaft is the first domino. These vibrations, if left unaddressed, can lead to premature wear of the driveshaft, u-joints, and even the transmission tail shaft. Imagine a Suburban cruising down the highway after the lift installation. A subtle but persistent vibration emanates from beneath the vehicle. This vibration, caused by the increased driveshaft angle, is a harbinger of potential problems. The constant oscillation stresses the u-joints, accelerating their wear and eventually leading to failure. In more severe cases, the vibrations can even damage the transmission, necessitating costly repairs.
Shift in Center of Gravity

The most apparent consequence of a lift kit is the raising of the vehicle’s center of gravity. This alteration increases body roll during cornering and reduces overall stability. Consider a Suburban attempting an evasive maneuver after being lifted. The higher center of gravity exacerbates the vehicle’s tendency to lean, making it more prone to rollover. The driver must exercise greater caution and reduce speed to maintain control, especially in emergency situations.

These alterations, while often necessary to achieve the desired increase in ride height and tire clearance, demand careful attention and correction. Solutions such as adjustable control arms, longer sway bar links, and driveshaft spacers are often employed to mitigate these effects and restore a semblance of balance to the vehicle’s handling characteristics. These parts are often included in kits as a requirement to prevent vehicle issues after the lift is installed, but sometimes are left out to reduce costs. The transformation of a 1999 Suburban with a six-inch lift is more than just bolting on new components; it is a recalibration of the vehicle’s very essence, demanding a comprehensive understanding of the intricate relationship between geometry and performance.

3. Drivetrain stress increase

The installation of a six-inch suspension lift on a 1999 Chevrolet Suburban is not a singular act of modification, but rather the beginning of a series of cascading effects that reverberate throughout the vehicle’s mechanical systems. One of the most significant of these effects is the amplified stress imposed upon the drivetrain the network of components responsible for transmitting power from the engine to the wheels. This increase in stress is not merely a theoretical concern; it is a tangible reality that can manifest in accelerated wear, diminished performance, and, in extreme cases, catastrophic failure. This section seeks to explore the intricate facets of this phenomenon, illuminating the subtle yet critical ways in which a suspension lift can strain the drivetrain of a classic Suburban.

Increased U-Joint Angles and Wear

A primary consequence of lifting a ’99 Suburban is the exacerbation of the angles at which the driveshafts operate, specifically at the universal joints (U-joints). These joints, designed to accommodate movement as the suspension articulates, are forced to operate at steeper angles due to the increased distance between the transmission and the axles. This is akin to bending a paperclip back and forth repeatedly; the increased stress concentrates at the bend, leading to metal fatigue and eventual breakage. A real-world example involves a Suburban used for frequent off-roading after a lift kit installation. The steeper U-joint angles, coupled with the increased strain of navigating rough terrain, cause the U-joints to wear out prematurely, resulting in vibrations and eventually requiring replacement. The implications extend beyond mere maintenance; a failed U-joint can lead to a sudden loss of power or even a locked drivetrain, potentially causing an accident.
Strain on Axle Components

The axles, the final link in the drivetrain, also bear the brunt of increased stress. Larger tires, often installed in conjunction with a lift kit, increase the rolling resistance and the overall weight the axles must rotate. This is analogous to asking an athlete to run a marathon while carrying a heavy backpack; the additional weight places undue stress on their joints and muscles. Consider a ’99 Suburban equipped with oversized tires after a lift kit installation. The increased weight and rolling resistance of the tires place significant strain on the axle shafts, bearings, and differentials. Over time, this strain can lead to bent axle shafts, premature bearing failure, and even differential damage, especially under heavy loads or during aggressive off-road driving. The consequence is not only increased maintenance costs but also a potential reduction in the vehicle’s towing capacity and overall reliability.
Torque Converter and Transmission Implications

The added stress is not limited to the axles and driveshafts; it extends back to the torque converter and transmission. The larger tires and increased rolling resistance require the engine and transmission to work harder to maintain the same speed. This increased workload translates to higher operating temperatures and increased internal pressures within the transmission. Imagine a ’99 Suburban frequently used for towing after a lift and larger tires were installed. The transmission, already tasked with managing the load of the trailer, now has to overcome the added resistance of the larger tires. This results in elevated transmission temperatures, potentially leading to premature wear of the clutches and bands within the transmission, and ultimately requiring a costly rebuild. Furthermore, the torque converter, responsible for multiplying engine torque, may experience increased slippage due to the increased load, further contributing to heat generation and reduced efficiency.
Differential Gear Ratio Mismatch

Often overlooked, but crucially important, is the potential mismatch between the differential gear ratio and the larger tires. The factory gear ratio is designed to optimize engine performance and fuel economy with the stock tire size. When larger tires are installed, the effective gear ratio changes, potentially leading to sluggish acceleration, reduced fuel economy, and increased strain on the engine and transmission. Envision a ’99 Suburban struggling to accelerate after the installation of a lift and oversized tires. The engine labors, and the transmission shifts frequently, but the vehicle feels underpowered. This is likely due to the mismatched gear ratio; the larger tires effectively make the gears “taller,” reducing the engine’s leverage and making it harder to accelerate. This can lead to increased fuel consumption, reduced engine life, and increased strain on the transmission as it constantly tries to compensate for the mismatched gear ratio.

In conclusion, the decision to install a six-inch suspension lift on a 1999 Chevrolet Suburban should not be taken lightly. While the aesthetic appeal and increased off-road capability are undeniable, the potential consequences for the drivetrain must be carefully considered. Mitigating these risks requires a comprehensive approach, including proper U-joint phasing, reinforced axles, transmission coolers, and, perhaps most importantly, a careful recalculation and adjustment of the differential gear ratio to match the new tire size. Only through such meticulous planning and execution can the benefits of a lifted Suburban be realized without sacrificing the long-term reliability and performance of its drivetrain.

4. Braking performance impact

When a 1999 Chevrolet Suburban undergoes a transformation with a six-inch lift kit, the alteration transcends mere aesthetics or off-road prowess. It introduces a significant shift in the vehicle’s dynamics, one that directly impacts its ability to stop safely and effectively. The braking system, meticulously engineered for the factory specifications, now operates under a new set of conditions, demanding careful consideration and, potentially, modification. Neglecting this aspect can lead to compromised safety and an increased risk of accidents.

Increased Stopping Distance

The most immediate consequence of a lifted Suburban is an increase in stopping distance. The higher center of gravity shifts the weight distribution, particularly during braking. Imagine a ’99 Suburban approaching a stop sign after the lift. The driver applies the brakes, but the vehicle continues to travel further than it did before the modification. The lifted suspension allows for greater weight transfer to the front wheels, reducing the grip of the rear tires. This reduced rear-end grip diminishes the braking force that can be applied, lengthening the stopping distance. This effect is amplified in emergency braking situations, where every foot counts. In adverse weather conditions, such as rain or snow, the increased stopping distance becomes even more pronounced, potentially leading to a collision.
Altered Brake Bias

The lift kit affects the brake bias, or the distribution of braking force between the front and rear axles. The factory brake system is calibrated to distribute braking force optimally based on the vehicle’s stock weight distribution and suspension geometry. Lifting the vehicle alters this balance. Envision a ’99 Suburban navigating a winding road after a lift kit installation. The driver enters a corner and applies the brakes. The altered brake bias, resulting from the lifted suspension and potentially larger tires, causes the front wheels to lock up prematurely. This leads to understeer, where the vehicle fails to turn as sharply as intended, potentially causing it to run wide in the corner. Correcting this altered brake bias may require adjustments to the proportioning valve or the installation of aftermarket brake components.
Reduced Brake Pad and Rotor Life

The increased weight and rolling resistance associated with larger tires, often installed alongside a lift kit, place additional strain on the braking system. This increased strain translates to higher operating temperatures and accelerated wear of brake pads and rotors. Picture a ’99 Suburban frequently used for towing or off-roading after a lift kit installation. The increased load and the demands of navigating challenging terrain require the brakes to work harder and more frequently. This results in elevated brake temperatures, which can cause brake fade (a reduction in braking effectiveness) and accelerate the wear of brake pads and rotors. The driver may find themselves replacing brake components more frequently than they did before the lift, adding to the overall cost of ownership.
Potential for ABS Malfunction

The Anti-lock Braking System (ABS), designed to prevent wheel lockup during hard braking, relies on accurate sensor readings from each wheel. A lift kit, by altering the suspension geometry and potentially affecting wheel speed sensor alignment, can interfere with the ABS system’s proper functioning. Imagine a ’99 Suburban braking hard on a slippery surface after the lift installation. The ABS system, confused by inconsistent wheel speed sensor readings caused by the altered suspension geometry, malfunctions and fails to activate properly. This results in wheel lockup and a loss of steering control, potentially leading to a skid and a collision. The potential for ABS malfunction highlights the importance of ensuring proper wheel alignment and sensor calibration after installing a lift kit.

The interplay between a six-inch lift kit and the braking performance of a ’99 Suburban is a complex one, demanding careful consideration and a proactive approach. While the lift may enhance the vehicle’s off-road capabilities and aesthetic appeal, it also introduces challenges that must be addressed to maintain safe and reliable braking. Solutions may range from upgrading brake components to recalibrating the ABS system, but the underlying principle remains the same: ensuring that the braking system remains capable of delivering safe and effective stopping power under the new operating conditions. This commitment to safety is paramount, transforming the lifted Suburban from a modified machine into a carefully engineered and responsibly enhanced vehicle.

5. Steering component adjustments

A six-inch suspension lift applied to a 1999 Chevrolet Suburban initiates a cascade of geometric alterations, demanding meticulous attention to the vehicle’s steering system. The factory-engineered steering components, designed for a specific range of motion and angles, are now subjected to conditions beyond their original parameters. Left unaddressed, these altered conditions can lead to compromised handling, accelerated wear, and potentially hazardous driving situations. The narrative of a lifted ’99 Suburban is, in part, a story of recalibrating the steering to maintain control and safety.

Drag Link and Tie Rod Length

Elevating the Suburban’s frame necessitates extending the length of the drag link and tie rods to maintain proper steering geometry. Imagine the vehicle attempting a simple turn after the lift, but without these adjustments. The steering wheel feels stiff, unresponsive, and the vehicle struggles to track smoothly through the arc. The factory-length components, stretched beyond their intended range, bind and resist movement, creating a disconnected feeling for the driver. Longer drag links and tie rods are required to restore the steering linkage to its optimal operating range, ensuring predictable and responsive handling. Without them, the steering becomes a compromise, a constant battle against the altered geometry.
Pitman Arm and Idler Arm Angles

The Pitman arm and idler arm, crucial for translating steering input into lateral movement of the wheels, also experience altered angles after a lift. These altered angles can lead to bump steer, a disconcerting phenomenon where the wheels steer themselves over bumps and uneven surfaces. Picture the lifted Suburban traversing a pothole-ridden road. The steering wheel jerks and pulls unexpectedly as the suspension articulates, making it difficult to maintain a straight line. This is bump steer in action, a direct consequence of the altered Pitman arm and idler arm angles. Drop Pitman arms and idler arms are often employed to correct these angles, minimizing bump steer and restoring a more stable and predictable steering feel.
Steering Shaft Extension

Raising the vehicle’s body relative to the steering gear necessitates extending the steering shaft to maintain proper connection and prevent binding. Neglecting this extension can lead to restricted steering range or even complete loss of steering control. Consider the scenario where the lifted Suburban attempts a tight U-turn. The driver reaches the limit of the steering wheel’s travel, but the wheels have not turned far enough to complete the maneuver. The steering shaft, stretched to its maximum extent, binds and prevents further rotation. A steering shaft extension bridges the gap created by the lift, ensuring full and unrestricted steering range, allowing the driver to confidently navigate any situation.
Steering Stabilizer Enhancement

The increased tire size and altered suspension geometry of a lifted Suburban can amplify vibrations and feedback felt through the steering wheel. A steering stabilizer, designed to dampen these vibrations and improve steering control, becomes even more crucial after a lift. Imagine the lifted Suburban traveling at highway speeds. The steering wheel vibrates excessively, making it difficult to maintain a steady course. The factory steering stabilizer, designed for smaller tires and stock suspension, struggles to cope with the increased forces. Upgrading to a heavy-duty steering stabilizer can effectively dampen these vibrations, providing a smoother and more controlled driving experience, reducing driver fatigue and enhancing safety.

The adjustments to the steering components of a 1999 Chevrolet Suburban undergoing a six-inch lift are not mere afterthoughts, but essential elements in preserving the vehicle’s drivability and safety. Each modification, from extending the drag link to enhancing the steering stabilizer, contributes to restoring the steering system’s intended function and mitigating the adverse effects of the lift. This careful recalibration transforms the lifted Suburban from a potentially unwieldy machine into a capable and confident vehicle, ready to tackle both on-road and off-road challenges with precision and control.

6. Tire size accommodation

The six-inch suspension lift on a 1999 Chevrolet Suburban finds its most visible expression in the accommodation of larger tires. The story begins with a desire: the yearning for increased ground clearance, a more imposing stance, or enhanced off-road traction. The lift kit is the mechanism, but the larger tires are the ultimate embodiment of this aspiration. The standard tires, perfectly adequate for the factory-configured Suburban, become a limitation. They appear undersized, swallowed by the increased wheel well space created by the lift. The transformation is incomplete without the transition to larger, more aggressive tires. This accommodation is not merely aesthetic; it’s a functional imperative. The increased tire diameter effectively lowers the final drive ratio, improving low-end torque and enabling the Suburban to navigate challenging terrain with greater ease.

Consider a ’99 Suburban, its lift kit installed, but still sporting the original tires. The lifted chassis exposes a stark contrast, an awkward visual imbalance. The vehicle possesses the height, but lacks the corresponding presence. The larger tires fill the wheel wells, creating a cohesive, purposeful look. They also increase the vehicle’s contact patch with the ground, improving grip and stability both on and off the road. A Suburban fitted with 35-inch tires, for instance, gains not only visual appeal but also enhanced capability in mud, sand, and snow. However, this accommodation is not without consequence. The larger tires necessitate recalibration of the speedometer and odometer to maintain accurate readings. They also place increased stress on the drivetrain components, requiring careful consideration of gear ratios and axle strength. Without these considerations, the accommodation of larger tires can lead to diminished performance and premature component failure.

The saga of the lifted ’99 Suburban culminates in the successful pairing of the lift kit with appropriately sized tires. It is a carefully orchestrated symphony of engineering and aesthetics, a testament to the transformative power of thoughtful modification. The accommodation of larger tires is not merely a step in the process; it is the defining element, the visible manifestation of the lift kit’s purpose. However, it is a responsibility as well as a reward. The larger tires demand respect, requiring careful maintenance and a heightened awareness of the vehicle’s capabilities and limitations. In the end, the lifted ’99 Suburban stands as a testament to the harmonious blend of form and function, a capable machine forged from a desire for enhancement and a commitment to responsible modification.

7. Installation complexity level

The endeavor of equipping a 1999 Chevrolet Suburban with a six-inch suspension lift is not merely a matter of bolting on new components. It is a journey into the intricate workings of automotive engineering, a challenge that demands respect for the vehicle’s design and a realistic assessment of one’s own capabilities. The “Installation complexity level” serves as a critical filter, separating those who can confidently undertake the task from those who should seek professional assistance. It is a question of skill, knowledge, and access to the right tools, a realization that the allure of a lifted Suburban must be tempered by an understanding of the effort required to achieve it safely and effectively.

Component Disassembly and Reassembly

The process begins with the methodical disassembly of the existing suspension system, a task that often reveals the ravages of time and the stubborn resistance of corroded bolts. Control arms, shocks, springs, and various linkages must be carefully detached, a process that can be surprisingly time-consuming and physically demanding. Each component must be meticulously cataloged and preserved, as they may be needed for reinstallation or modification. Then, the installation process will commence, which will be followed by calibration and testing, often taking up to 2 days. Then, it will be ready.
Specialized Tool Requirements

A basic set of wrenches and sockets will not suffice. The installation of a six-inch lift often requires specialized tools such as spring compressors, ball joint separators, and torque wrenches capable of handling high torque values. Access to a vehicle lift can significantly ease the process, allowing for safer and more efficient work. The absence of these tools can not only prolong the installation but also increase the risk of damaging components or causing injury. A spring compressor, for example, is essential for safely removing and installing coil springs, preventing a potentially dangerous release of energy. The absence of the right tools can turn a manageable task into a frustrating and potentially hazardous ordeal.
Geometric Alignment and Adjustment

The installation is not merely a matter of bolting components together; it requires precise geometric alignment to ensure proper handling and prevent premature tire wear. After installing the lift, a professional alignment is essential to correct the altered suspension geometry. This process involves adjusting camber, caster, and toe angles to within factory specifications, ensuring that the wheels track properly and the vehicle handles predictably. Neglecting this step can result in uneven tire wear, wandering steering, and compromised handling, negating the benefits of the lift kit and potentially creating a safety hazard.
Potential for Unforeseen Complications

Even with meticulous planning and preparation, unforeseen complications can arise. Stripped threads, broken bolts, and unexpected component wear can derail the installation and require resourceful solutions. The age of the 1999 Suburban adds another layer of complexity, as corrosion and wear can make disassembly more difficult and increase the likelihood of encountering unexpected problems. A mechanic with experience in working on older vehicles is better equipped to handle these challenges, possessing the knowledge and skills to diagnose and resolve unforeseen issues.

In conclusion, the “Installation complexity level” of a six-inch lift kit on a 1999 Chevrolet Suburban is not to be underestimated. It is a project that demands careful planning, specialized tools, and a thorough understanding of automotive mechanics. While the rewards of a lifted Suburban are undeniable, the path to achieving it must be approached with caution and a realistic assessment of one’s own capabilities. The decision to undertake the installation oneself or to seek professional assistance is a critical one, a choice that can significantly impact the safety, reliability, and overall enjoyment of the vehicle.

8. Long-term durability assessment

The installation of a six-inch lift kit on a 1999 Chevrolet Suburban is not a fleeting alteration, but a commitment to a transformed vehicle. The success of this commitment hinges on a critical, often overlooked element: the long-term durability assessment. This assessment transcends the immediate satisfaction of increased ground clearance and aggressive aesthetics, delving into the sustained impact on the Suburban’s mechanical integrity and overall longevity. It is the act of peering into the future, anticipating the stresses and strains that the modification will impose, and proactively mitigating potential failures. The story of a lifted Suburban is, in essence, a narrative of sustained resilience, a tale where the long-term durability assessment serves as both a compass and a shield.

Consider a ’99 Suburban, its lift kit expertly installed, its larger tires confidently gripping the road. The initial impressions are positive: the ride is smooth, the handling is predictable. However, without a comprehensive durability assessment, the seeds of future problems may already be sown. The increased stress on U-joints, the accelerated wear of ball joints, the potential for frame fatigue these are not immediate concerns, but rather insidious threats that accumulate over time. A proper assessment would involve a meticulous inspection of these critical components, identifying potential weaknesses and recommending preventative measures. Perhaps reinforced U-joints are necessary, or upgraded ball joints with increased load capacity. Frame bracing might be required to prevent cracking under the added stress. The assessment is not merely a checklist; it is a proactive strategy to ensure that the lifted Suburban remains a reliable and capable machine for years to come. The implementation of “Long-term durability assessment” is a thoughtful addition to prevent issues that the lifted ’99 Suburban may face in the future.

The long-term durability assessment, therefore, is not an optional add-on, but an integral component of the lift kit installation process. It is the embodiment of responsible modification, a recognition that altering a vehicle’s factory specifications carries with it an obligation to ensure its continued safety and reliability. Without this assessment, the lifted ’99 Suburban risks becoming a cautionary tale, a testament to the perils of short-sighted enthusiasm. With it, however, the Suburban transforms into a symbol of enduring strength, a vehicle that embodies both enhanced capability and long-term dependability. The assessment ensures that the transformation is not just visually striking, but mechanically sound, guaranteeing that the lifted Suburban remains a trusted companion for years to come.

Frequently Asked Questions

The decision to elevate a 1999 Chevrolet Suburban with a six-inch lift often triggers a cascade of inquiries. These are not mere questions, but rather the cautious probes of individuals contemplating a significant transformation of their vehicle. This section addresses some of the most pressing concerns, drawing upon experience and expertise to illuminate the path forward.

Question 1: Will a six-inch lift irrevocably compromise the Suburban’s on-road handling characteristics?

The answer, though nuanced, leans towards cautious optimism. A lift inherently alters the vehicle’s center of gravity, potentially leading to increased body roll and a less planted feel. However, properly engineered lift kits incorporate features designed to mitigate these effects. Upgraded shocks, sway bar links, and steering stabilizers can compensate for the altered geometry, restoring a semblance of balance. The key lies in selecting a reputable kit and ensuring professional installation. The goal is not to replicate the factory handling, but rather to achieve a safe and predictable driving experience within the new parameters.

Question 2: How significantly will fuel economy suffer after installing a six-inch lift and larger tires?

Fuel economy is inevitably impacted, but the magnitude varies depending on several factors. Larger, heavier tires increase rolling resistance, requiring the engine to work harder. The altered aerodynamics of a lifted vehicle also contribute to increased drag. However, the extent of the decline depends on driving habits, tire selection, and gear ratio adjustments. Careful tire selection can help; choosing a lighter tire with a less aggressive tread pattern will minimize the impact. Re-gearing the differentials can also help to regain lost power and improve fuel economy. It is wise to anticipate a drop of 2-4 MPG, but diligent planning can help to minimize the damage.

Question 3: Are there any hidden costs associated with a six-inch lift that are often overlooked?

Indeed, the initial cost of the lift kit is merely the tip of the iceberg. Alignment, a necessity after any suspension modification, represents an immediate expense. Larger tires, often paired with a lift, can significantly increase the overall cost. Furthermore, accelerated wear of certain components, such as U-joints and ball joints, should be anticipated. Recalibrating the speedometer to account for the larger tires is another potential expense. It is prudent to factor in these additional costs when budgeting for the lift, avoiding unpleasant surprises down the road.

Question 4: Will a six-inch lift render the ’99 Suburban incapable of towing or hauling heavy loads?

Not necessarily, but caution is advised. The lift itself does not inherently reduce towing capacity, but the larger tires can alter the effective gear ratio, making it more difficult to accelerate and maintain speed, especially when towing uphill. Upgrading the brakes is also recommended to compensate for the increased weight and rolling resistance. While towing and hauling remain possible, it is crucial to exercise greater caution and avoid exceeding the vehicle’s limits.

Question 5: How will a six-inch lift affect the Suburban’s ability to pass state vehicle inspections?

The impact on state vehicle inspections varies depending on the specific regulations in place. Some states have strict rules regarding vehicle height and suspension modifications. A lift that exceeds the allowable limits can result in a failed inspection. Furthermore, modifications that compromise the safety of the vehicle, such as improper steering geometry or inadequate braking performance, can also lead to failure. It is essential to research the local regulations before installing the lift, ensuring that the modifications comply with all applicable laws.

Question 6: What is the typical lifespan of a six-inch lift kit on a ’99 Suburban, assuming proper maintenance?

The lifespan of a lift kit is contingent upon several factors, including the quality of the components, the driving conditions, and the frequency of maintenance. A well-maintained lift kit, comprised of high-quality components, can easily last for 100,000 miles or more. Regular lubrication of grease fittings, periodic inspection of ball joints and U-joints, and prompt replacement of worn components are crucial for maximizing the kit’s lifespan. Neglecting maintenance, on the other hand, can significantly shorten the lifespan and lead to premature failure.

The decision to install a six-inch lift on a ’99 Suburban is a complex one, demanding careful consideration of a multitude of factors. By addressing these frequently asked questions, the path towards a transformed vehicle becomes clearer, allowing for informed decisions and a more rewarding experience.

The next section will delve into specific product recommendations and vendor comparisons, providing further guidance for those contemplating this significant modification.

Navigating the Terrain

The modification, a six-inch suspension lift to a 1999 Chevrolet Suburban, is often undertaken with the promise of enhanced capability and imposing aesthetics. However, the road to achieving these aspirations is paved with considerations that demand careful attention. The following represents a set of guiding principles, drawn from experience and observation, intended to assist in navigating the intricacies of this transformation.

Tip 1: The Foundation of Choice

The selection of the lift kit itself is paramount. Scrutinize the components, delving beyond marketing claims to examine the materials and construction. The 1999 Suburban, a vehicle of considerable age, demands components that can withstand the test of time and the added stresses imposed by the lift. Research the manufacturers, seeking out those with a proven track record of quality and durability. A well-chosen kit forms the bedrock of a successful and enduring modification.

Tip 2: Steering with Precision

The steering system, often overlooked, is a critical element in maintaining control and safety. A lifted Suburban, with its altered geometry, requires careful adjustment of the steering components. Lengthened drag links and tie rods, drop Pitman arms, and upgraded steering stabilizers are not mere accessories, but essential elements in restoring proper steering response and minimizing bump steer. Neglecting the steering system is akin to navigating a ship with a faulty rudder, inviting potential disaster.

Tip 3: Braking with Authority

Stopping power is as crucial as off-road capability. A six-inch lift and larger tires increase the vehicle’s weight and rolling resistance, placing greater demands on the braking system. Upgraded brake pads, rotors, and even calipers may be necessary to maintain safe stopping distances. Consider the added weight and how much additional force is needed to prevent an accident. The increased mass requires a more robust braking system.

Tip 4: Gearing for Performance

The selection of appropriate gear ratios is vital for optimizing performance and minimizing strain on the drivetrain. Larger tires effectively alter the final drive ratio, potentially leading to sluggish acceleration and reduced fuel economy. Re-gearing the differentials can compensate for this effect, restoring power and improving overall driveability. This is an often neglected step in the modification process, yet it is essential for ensuring that the vehicle performs optimally under the new operating conditions.

Tip 5: Drivetrain Vigilance

The drivetrain, the heart of the Suburban’s mechanical soul, is subjected to increased stress by the lift and larger tires. Regular inspection and maintenance of U-joints, axles, and differentials are essential for preventing premature failures. Upgraded components, such as stronger axle shafts and reinforced U-joints, may be warranted, particularly if the vehicle is used for frequent off-roading or heavy towing. Vigilance and proactive maintenance are the keys to preserving the drivetrain’s longevity.

Tip 6: Suspension Synergy

Pay attention to the synergy of the entire suspension system. A six-inch lift alters the angles and forces acting upon various components, and addressing each in isolation is insufficient. Consider the interplay between the shocks, springs, control arms, and sway bar links. Ensure that each component is properly matched and tuned to work in harmony, maximizing ride quality, handling, and overall stability. A holistic approach to suspension design is essential for achieving a balanced and well-performing lifted Suburban.

Tip 7: Professional Guidance

Recognize the limitations of one’s own expertise. The installation of a six-inch lift is not a task to be undertaken lightly. If uncertain about any aspect of the process, seek guidance from experienced professionals. A qualified mechanic can provide invaluable assistance, ensuring that the installation is performed correctly and that all necessary adjustments are made. Professional guidance is not an admission of weakness, but rather a prudent acknowledgment of the complexity of the task.

These guiding principles, born from practical experience, are intended to illuminate the path towards a successfully lifted 1999 Chevrolet Suburban. They represent a commitment to responsible modification, a recognition that the pursuit of enhanced capability must be tempered by a respect for engineering principles and a dedication to safety.

The subsequent sections will offer further insights into specific products and vendors, providing additional resources for those embarking on this transformative journey.

The Height of Responsibility

The preceding exploration has charted the complex landscape surrounding the modification of a 1999 Chevrolet Suburban with a six-inch suspension lift. The narrative unfolded from initial compatibility checks to the long-term durability assessments, revealing a project demanding more than just mechanical aptitude. Steering adjustments, braking implications, and drivetrain stresses emerged as critical considerations, transforming the envisioned enhancement from a simple bolt-on affair into a holistic recalibration of the vehicles engineering.

Ultimately, the decision to undertake this transformation resides with each individual. It is a choice that carries with it a commitmenta responsibility to ensure that the pursuit of enhanced capability does not compromise safety or long-term reliability. The lifted ’99 Suburban can be more than just a vehicle, but the success of that vision rests upon diligent planning, meticulous execution, and an unwavering dedication to responsible modification. Only then can one truly command the height, knowing that it stands upon a foundation of careful consideration and informed action.