I replaced rear brake calipers on my wifes 2004 S-Blazer yesterday(one was hanging up, so I did both, plus new pads), and cannot get them to bleed, I cannot get a pedal???

Afterwards, I read all the stuff online about trapped air in the ABS unit, is there a procedure to remove this trapped air??, or do I need to find someone with the Tech2 scantool as I read online???

If anyone local can help, I would gladly pay for your time, just dont wanna have to take it to the dealer, but will if I need to.

Thanks

RIck

First question I have to ask is did you allow the system to run out of brake fluid when you replaced the calipers? If so, you most likely have to pressure bleed to get the pedal up. You may be able to try a vacuum bleeder, they work well also. When I swap calipers, I dont disconnect the line from the old caliper, I just lay the caliper to the side. Get the new caliper mounted, then swap the hose quickly, loosing a minimum amount of fluid. That way, a quick gravity bleed gets the pedal back.
You should be able to get a pedal without a Tech 2, most times, you wont need it. However, there are the stuborn ones that need to have the abs solenoids actuated to get the pedal up. I have no explaination as to why some are tough. We had a 2007 Impala in the shop last week. After a master cylinder swap, we couldnt get a pedal, even with a Tech 2 and a pressure bleeder. Eventually, after a river of brake fluid, the pedal came up.
While I have not personnally tried it, I think a Snap-On Solus, will allow access to the bleed functions.

Thanks,

Stupid me disconnected them and brought the cores to the store with me as I wanted to bleed all of the old fluid out anyway, this is my first time doing ABS, and didnt think of that, the master did not run out, and not much fluid leaked, but I am afraid the air went up the system. I also heard that cycling the ignition will cycle the ABS and bleed the air, do you know if this is true?? I also heard there are 2 diferent calipers for this truck, front and rear mounted, they say the bleeder should be on the top, but mine is on the bottom, not sure if this is true??

Thats definetly a problem... The bleeders must be on the top, or the air will NEVER come out. You may have the calipers mounted on the wrong sides. They usually will fit right for left sides, but the bleeders will be facing down. You most liely will have to swap them , left to right.
I afraid that cycling the key wont help.

Thanks Vinny,

I am going to switch them, but it seems from searching the parts sites that the left for a 4x4 is the right for a RWD, but that would put the bleeders on the bottom vs. top, still worth a try though, this is just a RWD

RIck

Been there done that... definitely check this.