Originally Posted by roadracer
While having an alignment done I asked my dealer to drain my clutch fluid and replace it with Valvoline synthetic. Well to my surprise they couldn't find a bleeder or anywhere to drain the fluid. It seems like a sealed system. There must be a way to bleed the system if you get air in it. Maybe one of you have an answer. My clutch fluid seems to be breaking down and I would like to flush it out.
Here's the procedure for doing that. I didn't have any pics but the bleeder is on the actuator cylinder (inside the bell housing).
1. Ensure the reservoir is filled to the fill line with new hydraulic clutch fluid. Add fluid if required. Use Gm Vehicle Care Brake and Clutch Fluid Super Dot 4 GM P/N 88958860.
2. Press the clutch pedal all the way down to the floor.
3. Open the bleeder <b>on the actuator cylinder</b> to purge the air.
4. Close the bleeder and release the clutch pedal.
Important: Ensure no air is drawn into the clutch system.
5. Repeat steps 2, 3 and 4 until all air is out of the clutch system.
Check and refill the reservoir as needed while bleeding.
After bleeding, pump the clutch pedal several times. If the clutch engagement is not satisfactory, repeat the bleed procedure.
6. If the previous procedures are unsuccessful, perform the following steps.
Pump the clutch pedal very fast for 30 seconds.
Stop pumping and let the air escape into the reservoir.
Repeat this procedure as necessary.
Hope this helps!