The Chevrolet Tahoe (GMT900) 5.3L V8 with FlexFuel capability and automatic transmission, produced from 2007 to 2014, represents a significant iteration of Chevrolet’s full-size SUV. This variant occupied a central position within the GMT900 Tahoe lineup, offering a balance between capability, fuel efficiency (with the FlexFuel option), and everyday usability. It was a mainstay of American families and those needing a robust vehicle for towing and hauling, particularly in regions where full-size SUVs were highly favored. The GMT900 generation marked a shift towards more refined interiors and improved ride quality compared to its predecessors, while retaining the body-on-frame construction that defined the Tahoe’s rugged character.
Technical Specifications
| Brand | Chevrolet |
| Model | Tahoe |
| Generation | Tahoe (GMT900) |
| Type | 5.3L i V8 (320/326 Hp) FlexFuel AWD Automatic |
| Start of production | 2007 |
| End of production | 2014 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 9 |
| Doors | 5 |
| Fuel Type | Petrol / Ethanol – E85 |
| Weight-to-power ratio | 7.8 kg/Hp, 127.7 Hp/tonne |
| Weight-to-torque ratio | 5.5 kg/Nm, 181.2 Nm/tonne |
| Power | 320 Hp @ 5200 rpm |
| Power per litre | 60.1 Hp/l |
| Power (Ethanol – E85) | 326 Hp @ 5300 rpm |
| Power per litre (Ethanol – E85) | 61.2 Hp/l |
| Torque | 454 Nm @ 4400 rpm, 334.85 lb.-ft. @ 4400 rpm |
| Torque (Ethanol – E85) | 475 Nm @ 4400 rpm |
| Maximum engine speed | 6000 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | LMG |
| Engine displacement | 5326 cm3, 325.01 cu. in. |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 96 mm, 3.78 in. |
| Piston Stroke | 92 mm, 3.62 in. |
| Compression ratio | 9.9:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Engine oil capacity | 5.7 l, 6.02 US qt | 5.02 UK qt |
| Coolant | 17.3 l, 18.28 US qt | 15.22 UK qt |
| Kerb Weight | 2505 kg, 5522.58 lbs |
| Max. weight | 3311 kg, 7299.51 lbs |
| Max load | 806 kg, 1776.93 lbs |
| Trunk (boot) space – minimum | 479 l, 16.92 cu. ft. |
| Trunk (boot) space – maximum | 3084 l, 108.91 cu. ft. |
| Fuel tank capacity | 98 l, 25.89 US gal | 21.56 UK gal |
| Length | 5131 mm, 202.01 in. |
| Width | 2007 mm, 79.02 in. |
| Height | 1953 mm, 76.89 in. |
| Wheelbase | 2946 mm, 115.98 in. |
| Front track | 1732 mm, 68.19 in. |
| Rear (Back) track | 1702 mm, 67.01 in. |
| Ride height (ground clearance) | 289 mm, 11.38 in. |
| Minimum turning circle (turning diameter) | 11.9 m, 39.04 ft |
| Approach angle | 17° |
| Departure angle | 21.9° |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 265/70 R17 |
| Wheel rims size | 7.5J x 17 |
Powertrain & Engine Architecture
The heart of this Tahoe variant is the 5.3-liter (325 cubic inch) LMG V8 engine. This engine is a member of Chevrolet’s Vortec family, known for its robust construction and relatively simple design. The LMG features an iron block with aluminum cylinder heads, contributing to a good balance of durability and weight. It utilizes a multi-port fuel injection system, delivering fuel directly to each cylinder for optimized combustion. The engine’s valvetrain employs two valves per cylinder, operated by a single camshaft. The FlexFuel capability allows the engine to run on gasoline, E85 (85% ethanol), or any blend of the two, providing drivers with fuel choice and potentially reducing emissions. The 4L80-E four-speed automatic transmission was the standard pairing for the 5.3L engine. This transmission is known for its durability and ability to handle the high torque output of the V8, making it well-suited for towing applications. While not the most modern transmission in terms of gear count, it provided smooth and reliable shifting.
Driving Characteristics
The 5.3L V8, producing 320 horsepower and 454 lb-ft of torque, provided adequate power for the substantial weight of the Tahoe. Acceleration was respectable, though not particularly quick, with a 0-60 mph time typically in the 7.5-8.5 second range. The automatic transmission’s gear ratios were tuned for towing and hauling, prioritizing low-end torque over outright acceleration. Compared to the available 6.0L V8, the 5.3L offered less peak power but better fuel economy. The 4.8L V8, found in lower trims, provided even better fuel economy but felt noticeably underpowered when fully loaded or towing. The all-wheel-drive system enhanced traction in inclement weather and on slippery surfaces, making it a popular choice in regions with harsh winters. The ride quality was generally comfortable, thanks to the independent rear suspension, but the body-on-frame construction resulted in some noticeable body roll during cornering.
Equipment & Trim Levels
The 5.3L V8 AWD Tahoe was typically offered in LT and LTZ trim levels. The LT trim included standard features such as tri-zone automatic climate control, power windows and locks, a CD player with an auxiliary input, and cloth upholstery. The LTZ trim added features like leather upholstery, heated front seats, a Bose sound system, and rear parking assist. Optional extras included a navigation system, a sunroof, and a DVD entertainment system. The interior design was functional and spacious, with seating for up to nine passengers depending on the configuration. The third-row seats were relatively easy to access and provided decent comfort for adults on shorter trips.
Chassis & Braking
The GMT900 Tahoe utilized a traditional body-on-frame construction, providing a robust and durable platform. The front suspension featured an independent McPherson strut design with coil springs and an anti-roll bar. The rear suspension employed an independent multi-link setup, which improved ride quality and handling compared to earlier Tahoe models. All four wheels were equipped with disc brakes, providing ample stopping power. An anti-lock braking system (ABS) was standard, enhancing safety during emergency braking situations. The Tahoe’s relatively high ground clearance allowed it to navigate moderate off-road terrain, although it was primarily designed for on-road use.
Market Reception & Comparison
The 5.3L V8 AWD Tahoe was well-received by consumers and critics alike. It was praised for its spacious interior, comfortable ride, and strong towing capacity. The FlexFuel capability was seen as a positive feature, offering drivers fuel flexibility and potentially reducing emissions. However, some critics noted that the fuel economy was not particularly impressive, especially compared to newer SUVs. Compared to the 6.0L V8, the 5.3L offered a better balance of power and fuel economy, making it a more practical choice for many buyers. The 4.8L V8, while more fuel-efficient, was often criticized for its lack of power.
Legacy
The GMT900 Tahoe 5.3L V8 remains a popular choice in the used car market today. The LMG engine is known for its reliability, and with proper maintenance, it can easily exceed 200,000 miles. The 4L80-E transmission is also highly durable. Common issues include oil leaks, sensor failures, and occasional problems with the air suspension system (if equipped). Overall, this Tahoe variant represents a solid and dependable full-size SUV that continues to provide years of service to its owners. Its combination of capability, space, and affordability makes it a compelling option for families and those needing a versatile vehicle for work and play.
