The Chevrolet Tahoe (GMTT1XX) with the 6.2-liter V8 engine and all-wheel drive automatic transmission represents a significant iteration of Chevrolet’s full-size SUV, produced from the 2020 to 2024 model years. This variant occupied the upper echelon of the Tahoe lineup, offering substantial power and capability for those needing a large, versatile vehicle. It’s built on the GMTT1XX platform, a fully redesigned architecture that brought improvements in interior space, ride quality, and technology compared to previous generations. The GMTT1XX Tahoe aimed to balance traditional body-on-frame SUV robustness with more modern amenities and driving dynamics.
Technical Specifications
| Brand | Chevrolet |
| Model | Tahoe |
| Generation | Tahoe (GMTT1XX) |
| Type (Engine) | 6.2 V8 (420 Hp) AWD Automatic |
| Start of production | 2020 year |
| End of production | 2024 year |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 7 |
| Doors | 5 |
| Fuel Type | Petrol (Gasoline) |
| Power | 420 Hp @ 5600 rpm |
| Torque | 623 Nm @ 4100 rpm / 459.5 lb.-ft. @ 4100 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | L87 |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 103.25 mm / 4.06 in. |
| Piston Stroke | 92 mm / 3.62 in. |
| Number of valves per cylinder | 2 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV, VVT |
| Engine oil capacity | 7.6 l / 8.03 US qt | 6.69 UK qt |
| Coolant | 14.3 l / 15.11 US qt | 12.58 UK qt |
| Trunk (boot) space – minimum | 722 l / 25.5 cu. ft. |
| Trunk (boot) space – maximum | 3479 l / 122.86 cu. ft. |
| Length | 5351 mm / 210.67 in. |
| Width | 2058 mm / 81.02 in. |
| Height | 1927 mm / 75.87 in. |
| Wheelbase | 3071 mm / 120.91 in. |
| Front track | 1741 mm / 68.54 in. |
| Rear (Back) track | 1734 mm / 68.27 in. |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives permanently the four wheels of the vehicle. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 10 gears, automatic transmission Hydra-Matic |
| Front suspension | Independent coil spring |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 265/65 R18; 275/60 R20; 275/50 R22 |
| Wheel rims size | 18; 20; 22 |
Powertrain & Engine Architecture
The heart of this Tahoe variant is the L87 6.2-liter naturally aspirated V8 engine. This engine is a member of Chevrolet’s Small Block family, known for its durability and power delivery. It utilizes direct fuel injection, a technology that improves fuel efficiency and power output by injecting fuel directly into the combustion chamber. The engine also features Active Fuel Management (AFM), also known as cylinder deactivation, which shuts down four cylinders during light-load driving to further enhance fuel economy. The valvetrain employs an overhead valve (OHV) configuration with variable valve timing (VVT) to optimize engine performance across the rev range. The engine is mated to a sophisticated 10-speed Hydra-Matic automatic transmission. This transmission provides a wide gear ratio spread, contributing to both improved acceleration and highway fuel efficiency. The transmission is electronically controlled, adapting shift points based on driving conditions and driver input.
Driving Characteristics
The 6.2L V8 and 10-speed automatic combination delivers a robust driving experience. With 420 horsepower and 460 lb-ft of torque, the Tahoe offers strong acceleration, especially considering its substantial weight. The 10-speed transmission keeps the engine in its optimal power band, providing responsive shifts. Compared to the 5.3L V8 or the diesel engine options, this variant prioritizes outright power over fuel economy. While the 5.3L offers a more affordable entry point, and the diesel provides superior towing capacity and fuel efficiency, the 6.2L delivers a more engaging and powerful driving experience. The all-wheel-drive system provides enhanced traction in various weather conditions, making it a capable vehicle for year-round use.
Equipment & Trim Levels
The 6.2L V8 AWD Tahoe was typically offered in higher trim levels, such as LTZ and High Country. Standard features included leather upholstery, heated and ventilated front seats, a premium sound system, and a comprehensive suite of safety technologies. The High Country trim added even more luxury features, such as unique exterior styling, a power-retractable rear step, and advanced driver-assistance systems. Optional extras included a panoramic sunroof, rear-seat entertainment system, and adaptive cruise control. The interior design focused on providing a comfortable and spacious environment for passengers, with ample legroom and headroom in all three rows.
Chassis & Braking
The GMTT1XX Tahoe utilizes a fully independent suspension system, a significant upgrade over the solid rear axle found in previous generations. The front suspension features coil springs and independent control arms, while the rear suspension employs a multi-link design. This setup provides a more comfortable ride and improved handling characteristics. All four wheels are equipped with ventilated disc brakes, providing ample stopping power. The electronic stability control system and anti-lock braking system (ABS) work together to enhance safety and control in emergency braking situations. The chassis is designed to handle the vehicle’s substantial weight and provide a stable platform for towing and hauling.
Market Reception & Comparison
Critics generally praised the 6.2L V8 Tahoe for its powerful engine, refined ride quality, and spacious interior. However, fuel economy was a common concern, as expected with a large V8 engine. Compared to the 5.3L V8, the 6.2L offered a noticeable performance advantage, but at a higher price point. The diesel engine provided better fuel economy and towing capacity, but it came with a higher initial cost and potential maintenance concerns. The 6.2L AWD variant appealed to buyers who prioritized power and capability over fuel efficiency, and who needed a vehicle that could handle a variety of driving conditions.
Legacy
The GMTT1XX Tahoe 6.2L V8 AWD has proven to be a reliable and durable vehicle. The L87 engine is known for its longevity, and the 10-speed automatic transmission has also demonstrated good reliability. In the used car market, these models hold their value relatively well, particularly those in excellent condition and with low mileage. The combination of power, space, and capability makes it a popular choice for families and those who need a versatile vehicle for work and recreation. While newer Tahoe models offer even more advanced technology and features, the GMTT1XX 6.2L V8 AWD remains a capable and desirable SUV.
