GM Service Manual Online
For 1990-2009 cars only

Object Number: 2018928  Size: SH

Clutch operation is hydraulic and fully self-adjusting. The unit comprises:

  1. Master cylinder
  2. Connecting pipes
  3. Slave cylinder
  4. The master cylinder is mounted in the bulkhead and is connected to the clutch pedal via a piston rod.

    The slave cylinder is an integrated unit mounted in the clutch housing and comprises:


    Object Number: 2018929  Size: SH
  5. Cylinder housing
  6. Split piston
  7. Fixed release bearing

The slave cylinder cannot be disassembled. The hydraulic pressure from the master cylinder presses on the seal, which then pushes the piston and release bearing against the pressure plate. A spring is mounted between the cylinder housing and the release bearing, which means the release bearing, is always pressed against the pressure plate and in this manner reduces the play in the clutch pedal.

A hydraulic line links the master cylinder and the slave cylinder damper pipe (to reduce pedal vibration) and has a quick-release coupling at each end. The lower quick-release coupling, to the slave cylinder, has a bleed nipple.