Chevrolet Silverado / GMC Sierra. Service manual — part 115

Fig. 378: View Of Crankshaft Pulley & Bolts
Courtesy of GENERAL MOTORS CORP.

2. Remove the bolts and the crankshaft pulley.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 379: Removing Crankshaft Balancer Using J 23523-F
Courtesy of GENERAL MOTORS CORP.

3. Use the J 23523-F in order to remove the crankshaft balancer.

1. Install the J 23523-F plate and bolts onto the crankshaft balancer.

Tighten: Tighten the bolts to 25 N.m (18 lb ft).

2. Install the J 23523-F forcing screw into the plate.

3. Rotate the J 23523-F forcing screw clockwise in order to remove the crankshaft

balancer.

4. Remove the J 23523-F from the crankshaft balancer.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 380: View Of Crankshaft Balancer Weights
Courtesy of GENERAL MOTORS CORP.

5. Note the position and length of any crankshaft balancer front groove pins, if applicable.

VALVE ROCKER ARM COVER REMOVAL - LEFT SIDE

IMPORTANT: If replacing the crankshaft balancer, NEW weights must be

installed into the NEW crankshaft balancer, in the same
location as the old weights in the old balancer.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 381: Valve Rocker Arm Cover Bolts (Left)
Courtesy of GENERAL MOTORS CORP.

1. Remove the valve rocker arm cover bolts.

2. Remove the valve rocker arm cover bolt grommets.

3. Discard the valve rocker arm cover bolt grommets.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado