GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Inspect for contaminated lubricant. Refer to Fluid and Lubricant Recommendations in Maintenance and Lubrication.

Is the rear axle lubricant contaminated?

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Go to Step 2

Go to Step 3

2

  1. Drain the lubricant while hot.
  2. Wipe the axle housing clean.
  3. Refill with the specified lubricant. Refer to Lubrication Specifications .

Does the locking rear axle still chatter in turns?

--

Go to Step 3

System OK

3

  1. Inspect the clutch plates for deterioration. Refer to Locking Differential Disassemble .
  2. Inspect for damaged or worn parts.
  3. Replace parts as necessary.

Did you complete the repair?

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System OK

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