Chevrolet Silverado / GMC Sierra. Manual - part 428
Fig. 41: Identifying Frame Bracket
Courtesy of GENERAL MOTORS CORP.
1. Position the engine mount frame bracket on the frame. Do not install the bolts.
2. Install the engine mount.
3. Perform the following procedure prior to installing the engine mount bracket bolts.
1. Remove all traces of the original adhesive patch.
2. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.
3. Apply threadlocker GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the
bolts.
4. Install the 2 through-bolts.
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Tighten: Tighten the through-bolts to 75 N.m (55 lb ft).
Fig. 42: Identifying Engine Mount Bolts
Courtesy of GENERAL MOTORS CORP.
5. Install the bolts holding the engine mount to the engine.
Tighten: Tighten the engine mount bolts to 58 N.m (43 lb ft).
6. Lower the engine.
7. If 4WD vehicle, remove the chain from the front of the engine.
8. If 4WD vehicle, install the generator mounting bracket and the power steering mount
bracket bolt.
Tighten: Tighten the mounting bracket bolts to 50 N.m (37 lb ft).
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 43: View Of Engine Mount To Engine Mount Frame Bracket Bolt (Right)
Courtesy of GENERAL MOTORS CORP.
9. Install the 3 bolts holding the engine mount to the engine mount frame bracket.
Tighten: Tighten the engine mount to engine mount frame bracket bolts to 65 N.m (48 lb
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
ft).
Fig. 44: View Of Transmission Oil Cooler Lines, Bracket & Bolt
Courtesy of GENERAL MOTORS CORP.
10. If RWD vehicle with an automatic transmission, install the bolt for the transmission oil
cooler line bracket.
Tighten: Tighten the transmission oil cooler line bracket bolt to 9 N.m (80 lb in).
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado