GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Blazer - 4WD - RHD 🢒 Transmission/Transaxle 🢒 Clutch 🢒 Clutch Pedal Travels to Floor - Fluid in Master Cylinder

Diagnostic Aids

You cannot properly service a clutch until you know what is wrong with it. If the clutch pedal travels to the floor with no pressure and very little resistance, check for leaks or crimps in the hydraulic lines and check for the correct fluid level in the master cylinder. Inspect the master cylinder and the concentric slave cylinder for worn or damaged parts.

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 is checking for dents, kinks or fluid leaking from the hydraulic lines.

    3.

  3. This step checks for a faulty master cylinder.

    4.

  4. This step checks for a faulty concentric slave cylinder.

Step

Action

Yes

No

DEFINITION: The clutch pedal travels to the floor with no pressure and very little resistance.

1

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

Go to Step 2

Go to Symptoms - Clutch

2

Check the fluid level in the clutch master cylinder reservoir.

Is the fluid level OK?

Go to Step 4

Go to Step 3

3

Fill the master cylinder reservoir to the required level.

Is the clutch system OK?

System OK

Go to Step 4

4

Check for a burst or a leaking hydraulic line.

Is the hydraulic line OK?

Go to Step 6

Go to Step 5

5

Replace the clutch hydraulic line and master cylinder assembly. Refer to Master Cylinder Replacement .

Is the clutch system OK?

System OK

Go to Step 6

6

Check for hydraulic fluid in the master cylinder dust cover area.

Is there fluid in the dust cover?

Go to Step 7

Go to Step 8

7

Replace the clutch hydraulic pipe. Refer to Master Cylinder Replacement .

Is the clutch system OK?

System OK

Go to Step 8

8

Check for a rising hydraulic fluid level in the master cylinder reservoir.

Does the fluid level rise when the clutch pedal is depressed?

Go to Step 10

Go to Step 9

9

Replace the master cylinder. Refer to Master Cylinder Replacement .

Is the clutch system OK?

System OK

Go to Step 10

10

Inspect the clutch master cylinder.

Is the clutch master cylinder faulty?

Go to Step 11

Go to Step 12

11

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

Is the clutch system OK?

System OK

Go to Step 12

12

Inspect the concentric slave cylinder.

Is the concentric slave cylinder faulty?

Go to Step 13

--

13
  1. Replace the concentric slave cylinder. Refer to Clutch Concentric Actuator Cylinder Replacement .
  2. Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Diagnostic Aids