Chevrolet Silverado / GMC Sierra. Manual — part 2052

Fig. 81: View Of Special Tool & Bolts
Courtesy of GENERAL MOTORS CORP.

1. Remove the radiator support. Refer to Radiator Support Replacement .

2. Remove the valve lifters. Refer to Valve Lifter Replacement (L92 - First Design) or

Valve Lifter Replacement (L92 - Second Design) or Valve Lifter Replacement (LY2
and LY6) or Valve Lifter Replacement (LH6, LMG, LY5 and L76) .

3. Remove the engine front cover. Refer to Engine Front Cover Replacement (LC9, LH6,

LMG, LY2 and LY5) or Engine Front Cover Replacement (LY6, L76 and L92) .

4. Remove the starter motor. Refer to Starter Motor Replacement (4.3L) or Starter Motor

Replacement (4.8L, 5.3L, 6.0L, and 6.2L) or Starter Motor Replacement (6.6L) .

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

5. Install the J 42386-A (1) and bolts. See Special Tools . Use one M10-1.5 x 120 mm and

one M10-1.5 x 45 mm bolt for proper tool operation.

Tighten: Tighten the J 42386-A bolts to 50 N. See Special Tools .m (37 lb ft).

NOTE:

Refer to Fastener Notice .

IMPORTANT: Ensure that the teeth of the J 42386-A mesh with the teeth of

the engine flywheel. 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

Fig. 82: View Of CMP Actuator Alignment Mark & Crankshaft Sprocket
Alignment Mark
Courtesy of GENERAL MOTORS CORP.

6. Rotate the crankshaft sprocket until the camshaft position (CMP) actuator alignment mark

(1) and the crankshaft sprocket alignment mark (2) are aligned.

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. 83: View Of CMP Actuator Solenoid Valve
Courtesy of GENERAL MOTORS CORP.

7. Remove and discard the CMP actuator solenoid valve (234).

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