Chevrolet Silverado / GMC Sierra. Service manual — part 1905

Fig. 3: A/C Belt Tensioner
Courtesy of GENERAL MOTORS CORP.

1. Remove the accessory drive belt. Refer to Drive Belt Replacement - Accessory.

2. Install a ratchet into the air conditioning (A/C) belt tensioner adapter opening.

3. Rotate the A/C belt tensioner clockwise in order to relieve tension on the A/C belt.

4. Remove the A/C belt from the pulleys.

5. Slowly release the tension on the A/C belt tensioner.

6. Remove the ratchet from the A/C belt tensioner.

7. Clean and inspect the belt surfaces of all the pulleys.

Installation Procedure

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

Fig. 4: A/C Belt Tensioner
Courtesy of GENERAL MOTORS CORP.

1. Install the A/C belt over the crankshaft balancer.

2. Install a ratchet into the A/C drive belt tensioner adapter opening

3. Rotate the A/C belt tensioner clockwise in order to relieve tension on the belt tensioner.

4. Install the A/C belt over the tensioner pulley.

5. Install the A/C belt around the A/C compressor pulley.

6. Slowly release the tension on the A/C belt tensioner.

7. Remove the ratchet from the A/C belt tensioner.

8. Inspect the A/C belt for proper installation and alignment.

9. Install the accessory drive belt. Refer to Drive Belt Replacement - Accessory.

DRIVE BELT IDLER PULLEY REPLACEMENT

Removal Procedure

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

Fig. 5: View Of Drive Belt Idler Pulley
Courtesy of GENERAL MOTORS CORP.

1. Remove the accessory drive belt. Refer to Drive Belt Replacement - Accessory.

2. Loosen the drive belt idler pulley bolt and remove the idler pulley.

Installation Procedure

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

Fig. 6: View Of Drive Belt Idler Pulley
Courtesy of GENERAL MOTORS CORP.

1. Position the drive belt idler pulley to the generator bracket and tighten the idler pulley bolt

finger tight.

2. Tighten the drive belt idler pulley bolt.

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

3. Install the accessory drive belt. Refer to Drive Belt Replacement - Accessory.

DRIVE BELT TENSIONER REPLACEMENT - ACCESSORY

Removal Procedure

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