GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

DEFINITION:The clutch grabs or chatters during engagement.

1

Inspect the engine mounting fasteners.

Are the engine mounting fasteners loose or tightened out of sequence?

--

Go to Step 2

Go to Step 3

2

Tighten the engine mounting fasteners to the specified torque. Refer to Engine Mechanical.

Does the clutch still grab?

--

Go to Step 3

System OK

3

Check for a damaged engine mount. Is the engine mount damaged?

--

Go to Step 4

Go to Step 5

4

Replace the engine mount. Refer to Engine Mechanical.

Does the clutch still grab?

--

Go to Step 5

System OK

5

Check the clutch disc plate for burned or smeared resin.

Is there burned or smeared resin on the disc plate?

--

Go to Step 6

Go to Step 7

6

If the burns or smears are superficial, clean or sand off the excess resin. If the disc plate is burned or has heat checked parts, then replace the disc plate. Refer to Clutch Cover and Clutch Driven Plate Assembly .

Does the clutch still grab?

--

Go to Step 7

System OK

7

Check for a warped clutch disc plate.

Is the disc plate warped?

--

Go to Step 8

Go to Step 9

8

Replace the clutch disc plate. Ensure that runout does not exceed the amount given in the value column. Refer to Clutch Cover and Clutch Driven Plate Assembly .

Does the clutch still grab?

1.25 mm (0.05 in)

Go to Step 9

System OK

9

Check for oil on the clutch disc plate facing or a burned or glazed facing.

Is there oil on the clutch disc plate facing or a burned or glazed facing?

--

Go to Step 10

Go to Step 11

10

Install a new clutch disc plate and correct the leak at the source. Refer to Engine Mechanical and to Clutch Cover and Clutch Driven Plate Assembly .

Does the clutch still grab?

--

Go to Step 11

System OK

11

Check for worn splines on the transmission main drive gear.

Are there worn splines on the transmission main drive gear?

--

Go to Step 12

Go to Step 13

12

Replace the transmission main drive gear. Refer to Manual Transmission.

Does the clutch still grab?

--

Go to Step 13

System OK

13

Inspect the release bearing at the transmission main drive gear.

Is the release bearing binding on the retaining tube on the transmission main drive gear?

--

Go to Step 14

--

14

Replace the necessary components. Refer to Clutch Cover and Clutch Driven Plate Assembly .

Does the clutch still grab?

--

--

System OK