Chevrolet Silverado / GMC Sierra. Manual — part 202

Tighten: Tighten the J 23523-F plate bolts to 25 N.m (18 lb ft).

2. Install the J 23523-F screw into the end for the crankshaft.

3. Install the J 23523-F bearing, the washer, and the nut onto the J 23523-F screw.

4. Rotate the J 23523-F nut clockwise until the crankshaft balancer hub is completely

seated against the crankshaft position sensor reluctor ring.

6. Remove the J 23523-F .

Fig. 674: View Of Crankshaft Pulley & Bolts
Courtesy of GENERAL MOTORS CORP.

7. Install the crankshaft pulley and bolts. Finger tighten all bolts until snug.

Tighten: Tighten the crankshaft pulley bolts to 58 N.m (43 lb ft).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 675: Crankshaft Balancer Washer
Courtesy of GENERAL MOTORS CORP.

8. Ensure that the crown of the crankshaft balancer washer (2) is faced away from the engine.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 676: View Of Crankshaft Balancer Washer & Bolt
Courtesy of GENERAL MOTORS CORP.

9. Install the crankshaft balancer washer and the bolt.

Tighten: Tighten the crankshaft balancer bolt to 95 N.m (70 lb ft).

VALVE LIFTER INSTALLATION

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 677: View Of Valve Lifters
Courtesy of GENERAL MOTORS CORP.

1. Apply lubricant GM P/N 12345501 (Canadian P/N 992704) or equivalent, to the valve

lifter rollers.

2. Install the valve lifters.

IMPORTANT: If reusing the valve lifters, install the valve lifters in the

original positions.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado