The Chevrolet Tahoe (GMTT1XX) with the 6.2-liter V8 engine and 10-speed automatic transmission represents a significant iteration of Chevrolet’s full-size SUV, produced from the 2020 to 2024 model years. This variant occupied a premium position within the Tahoe lineup, offering substantial power and capability for those needing a large, versatile vehicle. It’s part of the fifth-generation Tahoe (GMTT1XX), a generation marked by a move to independent rear suspension and a more refined driving experience compared to its predecessors. The GMTT1XX platform also underpins the Chevrolet Suburban and GMC Yukon, sharing many core components but differing in styling and specific feature sets.
Technical Specifications
| Brand | Chevrolet |
| Model | Tahoe |
| Generation | Tahoe (GMTT1XX) |
| Type (Engine) | 6.2 V8 (420 Hp) 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 the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| 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 performance. It utilizes direct 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. Paired with the L87 is the 10L80 ten-speed automatic transmission, a Hydra-Matic unit. This transmission provides a wide gear ratio spread, contributing to both improved acceleration and reduced engine noise at highway speeds. The transmission’s sophisticated control system allows for smooth and precise shifts.
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, particularly when towing or carrying a full load. The 10-speed transmission keeps the engine in its optimal power band, providing responsive performance in various driving situations. Compared to the 5.3L V8 offered in lower trims, the 6.2L provides a noticeable increase in power and towing capacity. While not as fuel-efficient as the diesel option, the 6.2L offers a smoother and quieter driving experience. The independent rear suspension, a key feature of the GMTT1XX platform, significantly improves ride quality and handling compared to previous Tahoe generations.
Equipment & Trim Levels
The 6.2L V8 was typically offered on higher trim levels of the Tahoe, such as the Premier and High Country. Standard features included leather upholstery, heated and ventilated front seats, a premium sound system, and a comprehensive suite of safety technologies like automatic emergency braking and lane departure warning. The High Country trim added even more luxury features, such as unique exterior styling, a power-retractable rear step, and advanced trailering technology. Optional extras included a panoramic sunroof, rear-seat entertainment system, and adaptive cruise control.
Chassis & Braking
The GMTT1XX Tahoe features a fully boxed frame, providing a solid foundation for its substantial weight. The front suspension utilizes independent coil springs, while the rear suspension employs an independent multi-link setup. This configuration contributes to improved ride comfort and handling. 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 various driving conditions. Wheel sizes ranged from 18 to 22 inches, depending on the trim level.
Market Reception & Comparison
Critics generally praised the 6.2L Tahoe for its powerful engine, refined ride quality, and spacious interior. The 10-speed transmission was also well-received for its smooth shifting and improved fuel economy compared to older transmissions. Compared to the 5.3L V8, the 6.2L offered a significant performance advantage, making it the preferred choice for those who frequently tow or haul heavy loads. The diesel engine offered better fuel economy, but at a higher initial cost. Reliability has been generally good, with the L87 engine proving to be a durable and dependable powerplant.
Legacy
The Chevrolet Tahoe (GMTT1XX) 6.2L V8 Automatic has established itself as a capable and reliable full-size SUV. On the used car market, these models hold their value well, particularly those in excellent condition with low mileage. The L87 engine is known for its longevity, and with proper maintenance, it can provide many years of dependable service. The GMTT1XX platform’s independent rear suspension represents a significant improvement in ride quality and handling, making these Tahoes a desirable choice for buyers seeking a comfortable and capable SUV.
