Chevrolet Silverado / GMC Sierra. Service manual — part 126

7. Remove the camshaft position sensor O-ring seal and discard.

Fig. 422: Engine Front Cover
Courtesy of GENERAL MOTORS CORP.

8. Remove the engine front cover bolts.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

9. Remove the engine front cover.

10. Discard the engine front cover.

TIMING CHAIN AND SPROCKETS REMOVAL

Special Tools

J 5825-A Crankshaft Gear Remover. See Special Tools.

Removal

IMPORTANT: After the composite engine front cover is removed do not

reinstall the engine front cover. Always install a NEW engine
front cover.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 423: View Of Crankshaft Position Sensor Reluctor Ring
Courtesy of GENERAL MOTORS CORP.

1. Remove the crankshaft position sensor reluctor ring.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 424: View Of Timing Chain Tensioner Bracket, Bolt & Shoe
Courtesy of GENERAL MOTORS CORP.

2. Remove the timing chain tensioner shoe (229) using a downward motion.

3. Remove the timing chain tensioner bracket bolt and bracket (227 and 228).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado