GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 Yukon XL - 4WD 🢒 Transmission/Transaxle 🢒 Clutch 🢒 Clutch Master Cylinder Fluid Leaks

Diagnostic Aids

When hydraulic fluid is present on the master cylinder, the reservoir cap and the clutch pedal assembly or the carpet of the vehicle, check for worn or damage seals or other faulty parts of the clutch master cylinder.

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 checks for any seal leaks from the master cylinder.

Step

Action

Yes

No

DEFINITION: Hydraulic fluid is present in the master cylinder dust cover and on the clutch pedal assembly.

1

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

Go to Step 2

Go to Symptoms - Clutch

2

Inspect the master cylinder seal for any hydraulic fluid leaks.

Does the clutch master cylinder seal have any leaks?

Go to Step 3

System OK

3

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

Operate the system in order to verify the repair.

Did you correct the condition?

Go to Step 4

Go to Diagnostic Aids

4

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 1