Chevrolet Silverado / GMC Sierra. Manual - part 485
1. Install the knock pins in the oil pump drive gear to a height of 4.5-5.5 mm (0.177-0.217 in)
Fig. 246: View Of Crankshaft Reluctor & Oil Pump Drive Gear Bolts
Courtesy of GENERAL MOTORS CORP.
2. Install the crankshaft reluctor on the oil pump drive gear. Ensure the reluctor is aligned on
the knock pins.
3. Install the crankshaft reluctor bolts.
Tighten: Tighten the bolts to 8 N.m (71 lb in).
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 247: View Of Oil Pump Drive Gear
Courtesy of GENERAL MOTORS CORP.
4. Install the oil pump drive gear and reluctor to the crankshaft.
IMPORTANT: Do not damage the teeth on the crankshaft reluctor.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 248: View Of Oil Pump Driven Gear & Nut
Courtesy of GENERAL MOTORS CORP.
5. Install the oil pump driven gear.
6. While holding the secondary oil pump shaft with a hex driver, install the oil pump driven
gear nut.
NOTE:
Do not use an impact driver to remove or install the oil pump
driven gear nut. Use of an impact driver may shear the oil pump
drive gear pin in the crankshaft.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Tighten: Tighten the nut to 100 N.m (74 lb ft).
7. Install the engine front cover. Refer to Engine Front Cover Replacement.
CAMSHAFT REPLACEMENT
Tools Required
J 44643 Flywheel Holding Tool. See Special Tools .
J 26900-13 Magnetic Base. See Special Tools .
J 26900-12 Dial Indicator. See Special Tools .
Removal Procedure
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado