GM Service Manual Online
For 1990-2009 cars only

Checks

Action

Flat spot on the pinion or the ring gear teeth

Replace the pinion and the ring gear. Refer to Differential Carrier Assembly Disassemble .

Flat spot on the pinion bearing

Replace the bearing. Refer to Differential Carrier Assembly Disassemble .

Worn pinion splines

Replace the pinion. Refer to Differential Carrier Assembly Disassemble .

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