GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 TopKick C-Series (Conventional) C6/C7/C8 🢒 Driveline/Axle 🢒 Front Drive Axle 🢒 Constant Noise

Checks

Action

Flat spot on the pinion or the ring gear teeth

Replace the pinion and the ring gear. Refer to Drive Pinion and Ring Gear Replacement .

Flat spot on the pinion bearing

Replace the bearing. Refer to Drive Pinion Bearings Replacement .

Worn pinion splines

Replace the pinion. Refer to Drive Pinion and Ring Gear Replacement .