Chevrolet Silverado / GMC Sierra. Manual — part 484

4. Remove the oil pump drive gear and crankshaft sensor reluctor. Do not damage the

crankshaft reluctor teeth.

Fig. 244: View Of Crankshaft Reluctor & Oil Pump Drive Gear Bolts
Courtesy of GENERAL MOTORS CORP.

5. Remove the crankshaft reluctor to oil pump drive gear bolts.

6. Inspect the crankshaft reluctor for the damage, bent teeth, being bent or warped.

7. Inspect the oil pump drive gear for damaged or worn teeth.

8. Inspect the oil pump drive gear crankshaft pin for wear.

9. Inspect the groove of the crankshaft pin in the oil pump drive gear for wear.

10. Replace any parts that are damaged or worn.

IMPORTANT: Do not remove the reluctor from the oil pump drive gear

unless replacing the reluctor or the oil pump drive gear. The
reluctor is timed to the gear and once removed the correct
timing will be lost.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Installation Procedure

Fig. 245: View Of Knock Pins Proper Installation Position In Oil Pump Drive Gear
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: The crankshaft reluctor and the oil pump drive gear are timed

at the factory. In order to re-establish proper timing, install
knock pins in the oil pump drive gear if the crankshaft
reluctor was removed from the oil pump drive gear. The
knock pins are available through the parts department.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado