Chevrolet Silverado / GMC Sierra. Service manual — part 18

Fig. 16: Drive Belt Right Idler Pulley
Courtesy of GENERAL MOTORS CORP.

1. Install the idler pulley.

2. Install the idler pulley bolt until snug.

3. Install the drive belt. Refer to Drive Belt Replacement.

4. Tighten the idler pulley bolt.

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

DRIVE BELT IDLER PULLEY REPLACEMENT - WITHOUT AIR CONDITIONING

Removal Procedure

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 17: Drive Belt Idler Pulley (W/O AC)
Courtesy of GENERAL MOTORS CORP.

1. Loosen the idler pulley bolt.

2. Remove the drive belt. Refer to Drive Belt Replacement.

3. Remove the idler pulley.

Installation Procedure

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 18: Drive Belt Idler Pulley (W/O AC)
Courtesy of GENERAL MOTORS CORP.

1. Install the idler pulley.

2. Install the idler pulley bolt until snug.

3. Install the drive belt. Refer to Drive Belt Replacement.

4. Tighten the idler pulley bolt.

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

ENGINE MOUNT INSPECTION

NOTE:

Refer to Fastener Notice .

NOTE:

Refer to ENGINE MOUNTING NOTICE .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 19: Engine Mount
Courtesy of GENERAL MOTORS CORP.

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .

2. 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

3. Replace missing or loose bolts.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado