The Chevrolet Tahoe (GMT900) 5.3L V8 Automatic, produced from 2007 to 2009, represents a significant iteration of Chevrolet’s full-size SUV. Part of the GMT900 platform generation, this Tahoe variant aimed to balance substantial interior space, towing capacity, and a relatively accessible price point within the Tahoe lineup. It served as a mainstay for families and those requiring a versatile vehicle capable of both daily driving and demanding tasks. This configuration, pairing the 5.3-liter V8 engine with a four-speed automatic transmission, was a popular choice, offering a compromise between the base 4.8L engine and the more powerful 6.0L options.
Technical Specifications
| Brand | Chevrolet |
| Model | Tahoe |
| Generation | Tahoe (GMT900) |
| Type (Engine) | 5.3L i V8 (324 Hp) Automatic |
| Start of production | 2007 |
| End of production | 2009 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 9 |
| Doors | 5 |
| Fuel Type | Petrol (Gasoline) |
| Maximum speed | 180 km/h (111.85 mph) |
| Weight-to-power ratio | 7.5 kg/Hp, 133.3 Hp/tonne |
| Weight-to-torque ratio | 5.3 kg/Nm, 189.7 Nm/tonne |
| Power | 324 Hp @ 5300 rpm |
| Power per litre | 60.8 Hp/l |
| Torque | 461 Nm @ 4200 rpm (340.02 lb.-ft. @ 4200 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | LY5 |
| Engine displacement | 5327 cm3 (325.07 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 | 2430 kg (5357.23 lbs) |
| Max. weight | 3220 kg (7098.88 lbs) |
| Max load | 790 kg (1741.65 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 | 5130 mm (201.97 in.) |
| Width | 2007 mm (79.02 in.) |
| Height | 1955 mm (76.97 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° |
| 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 | 4 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 |
INTRODUCTION
The 2007-2009 Chevrolet Tahoe with the 5.3L V8 and automatic transmission was a cornerstone of Chevrolet’s SUV offerings. Built on the GMT900 platform, which also underpinned the GMC Yukon and Cadillac Escalade, the Tahoe aimed to provide a spacious, comfortable, and capable vehicle for families and those needing substantial cargo capacity. This particular variant occupied a middle ground in the Tahoe lineup, offering more power and towing capability than the base 4.8L model, but at a lower price point than the 6.0L option. It was primarily sold in the North American market, catering to the demand for large, body-on-frame SUVs.
Powertrain & Engine Architecture
At the heart of this Tahoe variant lies the LY5 5.3-liter (325 cubic inch) V8 engine. This engine is a member of Chevrolet’s Small-Block V8 family, known for its durability and relatively simple design. The LY5 features a cast iron block with aluminum cylinder heads, and utilizes a multi-port fuel injection system. The engine produces 324 horsepower at 5300 rpm and 340 lb-ft of torque at 4200 rpm. The 5.3L engine employs a two-valve per cylinder configuration and a 9.9:1 compression ratio. Paired with the engine is a four-speed automatic transmission (likely the 4L60E), chosen for its reliability and suitability for towing. This transmission features electronic control and overdrive for improved fuel efficiency at highway speeds. The transmission’s gear ratios were tuned to provide a balance between acceleration and fuel economy, prioritizing usability over outright performance.
Driving Characteristics
The 5.3L V8 and four-speed automatic combination in the GMT900 Tahoe delivered adequate, though not exhilarating, performance. Acceleration from 0-60 mph typically took around 7.5-8.5 seconds, depending on load and conditions. The four-speed automatic, while reliable, lacked the refinement and efficiency of more modern transmissions with more gears. The gear ratios were spaced to provide reasonable acceleration in everyday driving, but could feel somewhat strained when fully loaded or towing. Compared to the 4.8L Tahoe, the 5.3L offered a noticeable improvement in power and responsiveness. However, it didn’t match the quicker acceleration of the 6.0L models. The rear-wheel-drive configuration provided a traditional truck-like feel, and the Tahoe’s substantial weight contributed to a comfortable, albeit somewhat ponderous, ride.
Equipment & Trim Levels
The 2007-2009 Chevrolet Tahoe 5.3L Automatic was available in several trim levels, including LS, LT, and LTZ. The base LS trim typically included features such as cloth upholstery, air conditioning, power windows and locks, and an AM/FM stereo. The LT trim added features like leather upholstery, heated front seats, a power driver’s seat, and upgraded audio systems. The top-of-the-line LTZ trim included even more luxury features, such as a Bose sound system, rear-seat entertainment system, and automatic climate control. Optional extras included a sunroof, navigation system, and various towing packages. Interior color schemes varied depending on the trim level and options selected.
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, also with coil springs. This suspension configuration aimed to balance ride comfort with handling stability. Braking duties were handled by disc brakes on all four wheels, with ABS (Anti-lock Braking System) as standard equipment. The Tahoe’s substantial weight necessitated a robust braking system to provide adequate stopping power. The steering system utilized a rack-and-pinion setup for precise steering control.
Market Reception & Comparison
The 2007-2009 Chevrolet Tahoe 5.3L Automatic was generally well-received by critics and consumers alike. It was praised for its spacious interior, comfortable ride, and strong towing capacity. However, some critics noted the Tahoe’s relatively poor fuel economy and somewhat dated interior design compared to newer crossover SUVs. Compared to the 4.8L Tahoe, the 5.3L offered a significant performance upgrade, making it a more appealing option for those who frequently towed or carried heavy loads. The 6.0L Tahoe provided even more power, but at a higher price point. Fuel economy for the 5.3L Tahoe was typically in the range of 15-18 mpg city and 20-22 mpg highway.
Legacy
The GMT900 Tahoe 5.3L Automatic has proven to be a relatively reliable vehicle, with many examples still on the road today. The LY5 5.3L V8 engine is known for its durability, and the 4L60E transmission, while not without its potential issues, is generally considered to be a robust unit. Common maintenance items include oil changes, transmission fluid flushes, and regular inspections of the suspension and braking systems. In the used car market, these Tahoes remain popular due to their affordability, spaciousness, and capability. They are often sought after by families, outdoor enthusiasts, and those needing a versatile vehicle for work or recreation. While newer Tahoe models offer more advanced features and improved fuel economy, the GMT900 generation continues to hold a place as a capable and dependable full-size SUV.
