GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 Yukon XL - 4WD 🢒 Transmission/Transaxle 🢒 Clutch 🢒 Clutch Pedal Hard to Push

Diagnostic Aids

If the clutch pedal is hard to push check the for proper lubrication to the clutch pedal assembly and check for the clutch hydraulic lines for blockage or crimping. Also check for worn or damaged parts on the master cylinder or the wrong type of fluid or check the clutch disc. Check for measurement or pedal push of 40 lb normal to 80 lb hard.

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

  1. This step explains there parts and the operation of the clutch system.

    2.

  2. This step inspects for blockage or crimping of the hydraulic line.

    3.

  3. This step inspects the clutch disc for a worn or damage clutch disc.

Step

Action

Yes

No

1

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

Go to Step 2

Go to Symptoms - Clutch

2

Inspect the clutch hydraulic hose and pipe for blockage or crimping.

Is the hydraulic hose and pipe blocked or crimped?

Go to Step 3

Go to Step 4

3

Replace the clutch hydraulic hose and pipe in the master cylinder assembly. Refer to Master Cylinder Replacement .

Is the pedal still hard?

Go to Step 4

System OK

4

Inspect the clutch master cylinder for binding.

Is the clutch master cylinder binding?

Go to Step 5

System OK

5

Replace the master cylinder. Refer to Master Cylinder Replacement .

Did you find and repair the condition?

System OK

Go to Step 6

6
  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 ZFS6-650
  2. Inspect the clutch actuator for sticking and being seized.

Is the clutch actuator binding?

Go to Step 7

System OK

7

Replace the concentric slave cylinder or release bearing. Refer to Clutch Concentric Actuator Cylinder Replacement .

Did you find and repair the condition?

Go to Step 10

Go to Step 8

8

Inspect the clutch pressure plate for being faulty.

Is the clutch pressure plate worn?

Go to Step 9

System OK

9

Replace the disc plate. Refer to Clutch Assembly Replacement .

Did you find and repair the condition?

Go to Step 10

Go to Diagnostic Aids

10

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 1