On my 1991, the rubber button thing is on the distribution blocks just under the master cylinder.
CK5
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Stupid parking/E-brake light...
- Thread starter The Pumpkinator
- Start date
On my 1991, the rubber button thing is on the distribution blocks just under the master cylinder.
Ahh. You have the infamous and much-maligned (in my opinion, rightfully so) real-wheel-only ABS ("RWABS") system. (Assuming this is a '91 K5 or Burb or other old, V- or R- body style truck. I donno about the new ones.)
Previous trucks had the combination valve down on the crossmember, but it's possible that the RWABS moved it up top.
To add detail ... the rubber nub covers a reset, if you will, which slides between the front and rear. They should both have pressure, and the slider only moves if the two sides are different. If it does pop, during bleeding or due to a leak or whatever, you push the slider back (it only travels a fraction of an inch).
-- A
Rwabs sucks!
turbo325ii
Registered Member
Ya, my buttons are on the prop valve under the master cyl. the piece under the rad. fan is just a tee.
turbo325ii
Registered Member
Thought I could update this with a fix. It was just a fuse... 
Bigmoose153
Registered Member
I'm now having this exact problem, which fuse?
