Chevrolet Silverado / GMC Sierra. Service manual — part 1912

Fig. 30: View Of Engine Mount To Engine Bolts
Courtesy of GENERAL MOTORS CORP.

2. Install the engine mount to engine bolts (1).

Tighten: Tighten the bolts to 50 N.m (37 lb ft).

3. Using the adjustable jack, lower the engine until the engine mount is sitting flush on the

frame.

4. Remove the adjustable jack from the engine block.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

5. Install the left side exhaust manifold heatshield. Refer to Exhaust Manifold Heat Shield

Replacement - Left Side (4.3L) or Exhaust Manifold Heat Shield Replacement - Left
Side (4.8L, 5.3L, 6.0L, and 6.2L) .

Fig. 31: View Of Engine Mount Bracket Bolts
Courtesy of GENERAL MOTORS CORP.

6. Lower the vehicle.

7. Install the engine mount to frame bolts (1).

Tighten: Tighten the bolts to 65 N.m (48 lb ft) starting with the middle bolt then either side
bolt.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

8. Install the left wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Left

Side (Chevrolet) or Front Wheelhouse Liner Replacement - Left Side (GMC) .

9. If the vehicle is equipped with 4WD, install the front drive axle. Refer to Differential

Carrier Assembly Replacement (1500 FWD) or Differential Carrier Assembly
Replacement (2500 4WD) .

ENGINE MOUNT BRACKET REPLACEMENT - LEFT SIDE (2500 LY6)

Removal Procedure

Fig. 32: View Of Engine Mount Bracket & Bolts
Courtesy of GENERAL MOTORS CORP.

1. Remove the engine mount. Refer to Engine Mount Replacement - Left Side (1500 LY2)

or Engine Mount Replacement - Left Side (1500 LH6, LMG, LY5, L76 and L92) or
Engine Mount Replacement - Left Side (2500LY6).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

2. Remove the engine mount bracket bolts.

3. Remove the engine mount bracket.

Installation Procedure

Fig. 33: View Of Engine Mount Bracket & Bolts
Courtesy of GENERAL MOTORS CORP.

1. Position the engine mount bracket onto the frame.

2. Perform the following steps prior to installing the engine mount bracket bolts.

Remove all traces of the original adhesive patch.

Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.

Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the
bolts.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado