VIKING_MECHANIC
GMT 400 obsessed Swede.
Alright guys, need your help. I'm got a problem with the brakes on my 97 C1500 that mimics almost the same problem I had two years ago with it.
Back story:
A coworker was trying to help me figure out why my parking brake wasn't working properly, it would apply but wouldn't hold the truck. The cable to the left rear drum is very tight, while the cable on the right drum was loose. After some dicking around, I noticed the front cable is for a K3500 w/longbed(determined this with part number and went through my email to the day I bought it). The cable going from the pedal tp the middle of the frame is very tight, even with the pedal fully disengaged.
Now the problem. We thought we could disconnect the shoe from the plate the cable is attached to until I can get another cable. Put everything back together and now the brake pedal goes straight to the floor and the red brake light is on. Knowing what that light means, I immediately assumed air some how got in the system. We took off the drum and reconnected the brake cable and adjusted the shoes and put the drums back on.
Nothing changed.
I bled the brakes (twice) with our bleed machine and very little difference. I even tried bleeding the abs. Can use our scan tool because there is codes on and it refuses to do the procedures.
I even bled the abs manually and noticed a lot of air bubbles came out until it was a solid stream(even had coworker pump the pedal).
I don't remember what I did to correct this when it happened two years ago. Am I missing something? Keep bleeding brakes/abs module?
Back story:
A coworker was trying to help me figure out why my parking brake wasn't working properly, it would apply but wouldn't hold the truck. The cable to the left rear drum is very tight, while the cable on the right drum was loose. After some dicking around, I noticed the front cable is for a K3500 w/longbed(determined this with part number and went through my email to the day I bought it). The cable going from the pedal tp the middle of the frame is very tight, even with the pedal fully disengaged.
Now the problem. We thought we could disconnect the shoe from the plate the cable is attached to until I can get another cable. Put everything back together and now the brake pedal goes straight to the floor and the red brake light is on. Knowing what that light means, I immediately assumed air some how got in the system. We took off the drum and reconnected the brake cable and adjusted the shoes and put the drums back on.
Nothing changed.
I bled the brakes (twice) with our bleed machine and very little difference. I even tried bleeding the abs. Can use our scan tool because there is codes on and it refuses to do the procedures.
I even bled the abs manually and noticed a lot of air bubbles came out until it was a solid stream(even had coworker pump the pedal).
I don't remember what I did to correct this when it happened two years ago. Am I missing something? Keep bleeding brakes/abs module?