GM Service Manual Online
For 1990-2009 cars only

Strategy Based Diagnostics

Review the system operations in order to familiarise yourself with the system functions. Refer to Clutch System Description and Operation.

Visual/Physical Inspection

    • Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
    • Inspect the clutch fluid reservoir for the correct fluid level.
    • Inspect the hydraulic clutch lines for dents, kinks or other obvious damage that may affect the clutch system operations.
    • Inspect the clutch system for contamination of dirt, oil, or other substances that may affect the clutch system operations.
    • Inspect for aftermarket parts.

Intermittent

Test the vehicle under the same conditions that the customer reported in order to verify the system is operating correctly.

Symptom List

Important: Due to the variety of clutch options, there may be components in the mechanical diagnostic tables that are not on a particular vehicle.

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

    •  Clutch Drag Hard Shifting.
    •  Clutch Slipping.
    •  Clutch Grabbing.
    •  Clutch Noisy.
    •  Clutch Pedal Spongy Low Pedal Effort.
    •  Clutch Pedal Hard to Push.
    •  Clutch Vibration.