The 2008 Chevrolet Tahoe comes standard with a 5.3L Vortec V8 engine (RPO code LMG) that produces 320 horsepower and 340 lb-ft of torque. This is GM’s Gen IV small block engine featuring aluminum heads, iron block construction, and Active Fuel Management technology that can deactivate four cylinders under light load conditions to improve fuel economy. The engine uses a drive-by-wire throttle system and requires 87 octane regular gasoline. It’s paired with a 6L80E six-speed automatic transmission and is capable of towing up to 8,500 pounds when properly equipped.

The 2008 Tahoe shares most parts with the 2007-2014 GMT900 platform generation. Body panels, interior components, and many mechanical parts interchange across these years. The 5.3L engine components are compatible with 2007-2013 models, though 2014 had some changes. Transmission parts work with 2007-2013 6L80E equipped vehicles. Some electrical components and modules may have different part numbers between early (2007-2010) and late (2011-2014) production years due to software updates. Always verify part numbers and RPO codes for critical components like PCMs, BCMs, and airbag modules to ensure proper compatibility.

Parts availability changes daily. Call us at (603) 392-7313 or visit our online shop to check current inventory from this specific vehicle. If we have sold a part you need, our Parts Broker service can source it from our network of partner yards nationwide.

Yes! We ship parts from this vehicle and our entire inventory nationwide. Most orders ship within 1-2 business days via FedEx or freight carriers for larger components like engines and transmissions. Call (603) 392-7313 for a shipping quote on any part.

The 5.3L Vortec V8 in the 2008 Tahoe is generally reliable but has some known weak points. The Active Fuel Management system is the biggest concern, often failing between 80,000-150,000 miles and causing expensive repairs. When properly maintained with regular oil changes using the correct 5W-30 oil specification, these engines can easily exceed 200,000 miles. The iron block construction is very durable, but the AFM lifters and camshaft are vulnerable. Many owners disable the AFM system preventively. Regular maintenance including timely oil changes, cooling system service, and using quality fuel helps maximize longevity.