GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 Sonoma Pickup - 2WD 🢒 Transmission/Transaxle 🢒 Clutch 🢒 Clutch Does Not Disengage

Diagnostic Aids

The vehicle will not shift into gears sitting still, hard shift effort. Vehicle moves with the clutch pedal to the floor.

Test Description

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

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

    2.

  2. This step test for correct operation of the clutch system.

    3.

  3. This step inspects for any damaged or worn parts.

Step

Action

Yes

No

DEFINITION: If the clutch cannot be disengaged, or fails to release, you cannot shift gears.

1

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

Go to Step 2

Go to Symptoms - Clutch

2

Check for a pedal travel restriction.

Is the vehicle equipped with a aftermarket floor covering?

Go to Step 3

Go to Step 4

3

Remove the aftermarket floor covering.

Does the clutch work properly?

System OK

Go to Step 4

4

Test the clutch system. Refer to Symptoms - Clutch .

Does the clutch work properly?

System OK

Go to Step 5

5

Test for air in the clutch hydraulic system.

Is there air in the clutch hydraulic system?

Go to Step 7

Go to Step 6

6

Bleed the clutch hydraulic system. Refer to Hydraulic Clutch Bleeding .

Does the clutch work properly?

System OK

Go to Step 7

7

Inspect the master cylinder for worn seals.

Are the seals worn?

Go to Step 8

Go to Step 9

8

Replace the necessary components. Refer to Master Cylinder Replacement .

Does the clutch work properly?

System OK

Go to Step 9

9
  1. Remove the transmission. Refer to Transmission Replacement in Manual Transmission - NV1500.
  2. Check for a worn or damaged concentric slave cylinder.

Is the concentric slave cylinder worn or damaged?

Go to Step 10

Go to Step 11

10

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

Does the clutch work properly?

System OK

Go to Step 11

11

Inspect the clutch assembly for the following:

    • Damaged or worn clutch driven plate
    • Binding on the clutch driven plate

Are the clutch components OK?

--

Go to Step 12

12

Replace the clutch disc. Refer to Clutch Assembly Replacement .

Did you find and correct the condition?

Go to Step 13

Go to Diagnostic Aids

13
  1. Install the transmission. Refer to Transmission Replacement in Manual Transmission - NV1500.
  2. Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 1