GM Service Manual Online
For 1990-2009 cars only

Intermittent Noise for GMC Truck TopKick C-Series (Conventional) C4/C5 2005

Checks

Action

Warped ring gear

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

Loose differential case assembly

Set the differential case assembly to the proper preload and backlash. Refer to Differential Carrier Bearing Preload Adjustment and Backlash Inspection and Adjustment .