GM Service Manual Online
For 1990-2009 cars only

Diagnostic Aids

If the clutch release is noisy, with the clutch fully engaged, or during engagement, inspect the release bearing for burrs and nicks.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. This step inspects the clutch system components and the operation of the clutch system.

  2. This step inspects for damage or worn parts.

Step

Action

Yes

No

DEFINITION: The clutch release bearing is noisy with the clutch fully engaged or during engagement.

1

Did you review the clutch symptom operations and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Clutch

2

  1. Remove the transmission. Refer to the following:
  2. •  Transmission Replacement in Manual Transmission NV - 3500
    •  Transmission Replacement in Manual Transmission NV - 4500
    •  Transmission Replacement in Manual Transmission ZF S6 - 650
  3. Inspect the release bearing.

Is the release bearing worn?

Go to Step 3

Go to Step 4

3

Replace the release bearing in the clutch actuator. Refer to Clutch Concentric Actuator Cylinder Replacement .

Is the clutch release bearing still noisy?

Go to Step 4

System OK

4

Inspect the clutch release bearing for binding.

Is the release bearing binding on the transmission bearing retainer?

Go to Step 5

System OK

5

Inspect for a weak linkage return spring.

Is the return spring weak?

Go to Step 6

System OK

6

Replace the return spring. Refer to Clutch Assembly Replacement .

Did you find and repair the condition?

Go to Step 7

Go to Diagnostic Aids

7

  1. Install the transmission. Refer to the following:
  2. •  Transmission Replacement in Manual Transmission NV - 3500
    •  Transmission Replacement in Manual Transmission NV - 4500
    •  Transmission Replacement in Manual Transmission ZF S6 - 650
  3. Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 1