The Chevrolet Tahoe (GMTT1XX, facelift 2024) represents the latest iteration of Chevrolet’s full-size SUV, continuing a lineage stretching back to the mid-1990s. Introduced in October 2024, this version builds upon the GMTT1XX platform, offering a refreshed design and updated technology. The 6.2-liter V8 engine paired with a 4WD Hydra-Matic transmission is a significant offering within the Tahoe lineup, positioned as a premium powertrain choice for buyers prioritizing substantial power and all-weather capability. This variant caters to those needing a large SUV for towing, hauling, and comfortable family transportation, particularly in regions experiencing inclement weather.
Technical Specifications
| Brand | Chevrolet |
| Model | Tahoe |
| Generation | Tahoe (GMTT1XX, facelift 2024) |
| Type (Engine) | 6.2 V8 (420 Hp) 4WD Hydra-Matic |
| Start of production | October, 2024 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 7-9 |
| Doors | 5 |
| Fuel consumption (economy) – urban (EPA) | 16.8 l/100 km (14 US mpg, 16.8 UK mpg, 6 km/l) |
| Fuel consumption (economy) – extra urban (EPA) | 13.1 l/100 km (18 US mpg, 21.6 UK mpg, 7.6 km/l) |
| Fuel consumption (economy) – combined (EPA) | 14.7 l/100 km (16 US mpg, 19.2 UK mpg, 6.8 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 6.3 kg/Hp, 157.5 Hp/tonne |
| Weight-to-torque ratio | 4.3 kg/Nm, 233.7 Nm/tonne |
| Power | 420 Hp @ 5600 rpm |
| Power per litre | 68.2 Hp/l |
| Torque | 623 Nm @ 4100 rpm (459.5 lb.-ft. @ 4100 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | EcoTec3 / L87 |
| Engine displacement | 6162 cm3 (376.03 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 103.25 mm (4.06 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Compression ratio | 11.5:1 |
| 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) |
| Kerb Weight | 2666 kg (5877.52 lbs.) |
| Max. weight | 3399 kg (7493.51 lbs.) |
| Max load | 733 kg (1615.99 lbs.) |
| Fuel tank capacity | 91 l (24.04 US gal | 20.02 UK gal) |
| Permitted trailer load with brakes (12%) | 3674 kg (8099.78 lbs.) |
| 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, Transverse stabilizer, Air Suspension – Optional |
| Rear suspension | Independent multi-link spring suspension with stabilizer, Air Suspension – Optional |
| Front brakes | Ventilated discs, 343×30.4 mm |
| Rear brakes | Ventilated discs, 345×25.4 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 265/65 R18; 275/55 R20; 275/60 R20; 275/50 R22; 285/40 R24 |
| Wheel rims size | 18; 20; 22; 24 |
Powertrain & Engine Architecture
At the heart of this Tahoe variant lies the 6.2-liter EcoTec3 L87 V8 engine. This naturally aspirated engine utilizes direct injection, a hallmark of modern GM engines, to deliver improved fuel efficiency and power output. The engine features a robust cast iron block and aluminum cylinder heads. The overhead valve (OHV) valvetrain, coupled with variable valve timing (VVT), optimizes performance across the engine’s operating range. The L87 is known for its durability and relatively straightforward maintenance compared to some more complex engine designs. The Hydra-Matic 10-speed automatic transmission is a key component, providing a wide gear ratio spread for both efficient cruising and strong acceleration. This transmission is electronically controlled, adapting shift points based on driving conditions and driver input. Cylinder deactivation is also included, allowing the engine to operate on fewer cylinders during light-load situations to further enhance fuel economy.
Driving Characteristics
The 6.2L V8 and 10-speed automatic combination delivers a noticeable performance advantage over the lower-displacement engine options available in the Tahoe lineup. With 420 horsepower and 460 lb-ft of torque, acceleration is brisk, especially considering the vehicle’s substantial weight. The 10-speed transmission allows the engine to stay within its optimal power band more frequently, resulting in responsive performance in various driving scenarios. While not a sports car, the Tahoe 6.2L offers confident passing power and effortless towing capability. The 4WD system provides enhanced traction in slippery conditions, making it suitable for year-round use. Compared to the 5.3L V8, the 6.2L feels significantly more powerful, while the 3.0L Duramax diesel offers comparable torque but a different power delivery characteristic.
Equipment & Trim Levels
The 6.2L V8 engine is typically offered on higher trim levels of the Tahoe, such as the Premier and High Country. Standard features generally include leather upholstery, heated and ventilated front seats, a premium sound system, and a comprehensive suite of driver-assistance technologies. The High Country trim adds even more luxury features, such as unique exterior styling cues, enhanced interior trim, and advanced safety systems. Optional extras include a panoramic sunroof, rear-seat entertainment system, and adaptive air suspension. The interior design emphasizes spaciousness and comfort, with ample room for passengers and cargo.
Chassis & Braking
The GMTT1XX platform utilizes a fully independent suspension system, contributing to a comfortable ride quality. The front suspension features coil springs and a transverse stabilizer bar, while the rear suspension employs a multi-link design with a stabilizer bar. Air suspension is available as an option, providing adjustable ride height and further enhancing ride comfort. Braking duties are handled by ventilated discs at all four corners, providing ample stopping power. The anti-lock braking system (ABS) is standard, along with electronic stability control and traction control. The Tahoe’s substantial weight necessitates a robust braking system to ensure safe and controlled stopping performance.
Market Reception & Comparison
The 6.2L V8-equipped Tahoe has generally received positive reviews from automotive critics. The engine is praised for its strong performance and smooth operation. However, fuel economy is a common concern, as expected with a large SUV and a powerful V8 engine. Compared to the 5.3L V8, the 6.2L offers a noticeable performance upgrade, but at a higher price point. The Duramax diesel provides comparable torque and better fuel economy, but it comes with a higher initial cost and potentially more complex maintenance requirements. Reliability has been generally good, with the EcoTec3 engine family proving to be relatively durable.
Legacy
The EcoTec3 L87 engine has become a mainstay in GM’s full-size SUV and truck lineup. Its combination of power, durability, and relatively straightforward maintenance has made it a popular choice among buyers. The 10-speed Hydra-Matic transmission has also proven to be a reliable and efficient component. In the used car market, Tahoe models equipped with the 6.2L V8 and 4WD command a premium price due to their desirable performance and capability. As with any vehicle, regular maintenance is crucial to ensure long-term reliability. The GMTT1XX platform represents a significant step forward in terms of ride quality, handling, and technology, solidifying the Tahoe’s position as a leading full-size SUV.
