Hey guys. Looking for some help with my Pontiac G5. The clutch going soft over night and while driving. however, if I lightly maintain my foot on the clutch pedal while driving it will hold pressure. Also if I leave the clutch pressed in while parked with a piece of wood overnight it will as well hold pressure.

I don't understand what the problem is.... would this point to the clutch slave or master cylinder??

also to add when I do lose pressure it takes a fair bit of pumping of the clutch pedal to get pressure back.

thanks in advance for your help and suggestions.

 

Sounds like you had my problem.
https://www.cobaltss.net/forums/2-0l...-issue-330924/

If you check your brake fluid, are you losing any? If not, it's possible the o-rings in the line are getting worn out and is sucking in air (as mine didn't leak at all). I ended up replacing the line and the elbow which did resolve this issue.