GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value

Yes

No

DEFINITION:Low clutch pedal or pedal on the floor.

1

Inspect the clutch hydraulic line.

Is the hydraulic line bursting or leaking?

--

Go to Step 2

Go to Step 3

2

Replace the master cylinder and hydraulic line assembly. Refer to Clutch Assembly Replacement .

Does the clutch pedal still stay on the floor when disengaged?

--

Go to Step 3

System OK

3

Inspect the reservoir for fluid.

Is there fluid in the reservoir?

--

Go to Step 5

Go to Step 4

4

Fill the reservoir with fluid.

Does the clutch pedal still stay on the floor when disengaged?

--

Go to Step 5

System OK

5

Inspect the clutch release bearing in the concentric slave cylinder for binding.

Is there binding on the clutch release bearing?

--

Go to Step 6

Go to Step 7

6

Lubricate and free up the clutch release bearing or replace the clutch release bearing. Refer to Clutch Concentric Actuator Cylinder Replacement

Does the clutch pedal still stay on the floor when disengaged?

--

Go to Step 7

System OK

7

Check to see of the master cylinder pushrod has fallen off the clutch pedal.

Has the master cylinder pushrod fallen off the clutch pedal?

--

Go to Step 8

Go to Step 9

8

Correctly install the master cylinder pushrod. Refer to Master Cylinder Replacement .

Does the clutch pedal still stay on the floor when disengaged?

--

Go to Step 9

System OK

9

Inspect the master cylinder.

Is the master cylinder faulty?

--

Go to Step 10

Go to Step 11

10

Replace the clutch master cylinder as needed. Refer to Master Cylinder Replacement .

Does the clutch pedal still stay on the floor when disengaged?

--

Go to Step 11

System OK

11

Inspect the diaphragm spring.

Is the diaphragm spring weak or broken?

--

Go to Step 12

Go to Step 13

12

Replace the clutch pressure plate. Refer to Clutch Assembly Replacement .

Does the clutch pedal still stay on the floor when disengaged?

--

Go to Step 13

System OK

13

Check the master cylinder seal and the master cylinder center valve seal.

Is the master cylinder seal or the center valve seal faulty?

--

Go to Step 14

--

14

Replace the master cylinder. Refer to Master Cylinder Replacement .

Does the clutch still stay on the floor when disengaged?

--

--

System OK