Chevrolet Silverado / GMC Sierra. Manual - part 421
1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Remove the oil pan skid plate.
Fig. 16: Identifying Engine Shield And Retaining Bolts
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3. Remove the engine protection shield.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 17: View Of Engine Mount To Engine Mount Frame Bracket
Courtesy of GENERAL MOTORS CORP.
4. Inspect for loose or missing bolts at the following locations:
Engine mount bracket to engine
Engine mount frame bracket to frame
Engine mount to engine mount bracket
Engine mount to engine mount frame bracket
NOTE:
Refer to Engine Mounting Notice .
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
5. Replace missing or loose bolts. Refer to Engine Mechanical Specifications .
Fig. 18: View Of Ground Wire Bolt Bosses (Left Side)
Courtesy of GENERAL MOTORS CORP.
NOTE:
Refer to Engine Lifting Notice .
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
6. If the vehicle is 4-wheel drive (4WD), you will not be able to access the lifting points on the
engine. In order to raise the engine, attach a chain to the front of the engine. Then follow the
inspection steps.
7. If the vehicle is rear-wheel drive (RWD), in order to raise the engine to inspect the left
engine mount, use a suitable jack on the ground wire bolt bosses on the left side of the
engine
Fig. 19: View Of Ground Wire Bolt Bosses (Right Side)
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado