Chevrolet Silverado / GMC Sierra. Service manual — part 2038

Courtesy of GENERAL MOTORS CORP.

7. Loosen and separate the CMP actuator and timing chain from the camshaft. Position your

fingers behind the actuator sprocket and pull the actuator away from the front of the
camshaft. Never pull on the reluctor wheel when attempting to remove the actuator.

CAUTION: Do not push or pull on the reluctor wheel of the camshaft

position (CMP) actuator during removal or installation.
The reluctor wheel is retained to the front of the CMP
actuator by 3 roll pins. Pushing or pulling on the wheel
may dislodge the wheel from the front of the actuator. The
actuator return spring is under tension and may rotate the
dislodged reluctor wheel, causing personal injury.

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. 30: View Of Tie Strap Through Center Of Actuator
Courtesy of GENERAL MOTORS CORP.

8. Insert and secure a tie strap (1) through the center of the actuator and over the reluctor

wheel.

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. 31: View Of Timing Chain Tensioner & Bolts
Courtesy of GENERAL MOTORS CORP.

9. Remove the timing chain tension bolts (231) and tensioner (232).

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. 32: View Of Crankshaft Sprocket Special Tools
Courtesy of GENERAL MOTORS CORP.

10. Using the J 41816-2 (1), the J 41558 (2), bolts (3) and the J 8433 (4) in order to remove

the crankshaft sprocket. See Special Tools .

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