GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2002 🢒 GMC C Sierra - 2WD 🢒 Transmission/Transaxle 🢒 Clutch 🢒 Pedal Stays on Floor (Clutch Disengaged)

Diagnostic Aids

Inspect the clutch pedal for a loose or worn clutch pedal spring. If the clutch pedal stays to the floor, inspect the master cylinder for proper fluid level or faulty parts. Inspect the hydraulic hoses or pipes for damage or leaks, and the clutch diaphragm springs for being broken.

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.

  2. This step inspects the hydraulic lines for kinks, dents or other damage.

    3.

  3. This step inspects for the correct fluid level in the reservoir.

    4.

  4. This step inspects for a faulty release bearing.

Step

Action

Yes

No

DEFINITION: Low clutch pedal, or pedal stays on the floor.

1

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

Go to Step 2

Go to Symptoms - Clutch

2

Inspect for the master cylinder pushrod to have fallen off the clutch pedal.

Has the master cylinder pushrod fallen off the clutch pedal?

Go to Step 4

Go to Step 3

3

Inspect the clutch hydraulic line for leaks.

Did you find and repair the condition?

Go to Step 11

Go to Step 6

4

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

If the vehicle is equipped with the ZF S6-650, you must manually pull the clutch pedal back. The ZF S6-650 does not have a return spring on this assembly.

Does the clutch pedal stay on the floor when disengaged?

Go to Step 5

Go to Step 6

5

Inspect the reservoir for fluid.

Is there fluid in the reservoir?

Go to Step 7

Go to Step 6

6

Fill the reservoir with fluid.

Does the clutch pedal stay on the floor when disengaged?

Go to Step 7

Go to Step 11

7
  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
  2. Inspect the clutch release bearing.

Is there binding on the clutch release bearing?

Go to Step 8

Go to Step 9

8

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 9

System OK

9

Inspect the master cylinder.

Inspect the master cylinder and the quick connect fitting for leaks.

Is the master cylinder faulty?

Go to Step 10

System OK

10

Replace the master cylinder. Refer to Clutch Master Cylinder Replacement .

Did you find and repair the condition?

Go to Step 11

Go to Diagnostic Aids

11

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 1