R U Supersticious?

outcasd54 · August 24, 2014

Everything I've owned for years has been Fords. I just started to fix up my first Chevy/GMC. I'm plagued with brake issues I've never had before. Do you think that the Ford God (if there is one) has put a hex on me?

Texas Husker · August 24, 2014

Maybe you're just not used to stuff that works correctly. which is it, Chevy or GMC? I realize the older ones are all but one and the same, but what's the vehicle? We can point you in the right direction for some help on here if needed with some more info. Welcome to the hex, I mean, Forum.

outcasd54 · August 31, 2014

Nice of you to get back to me. Its an 89 GMC Sierra 1500 SLE. 5.7 auto 2 WD. I knew it had brake problems when I bought it. i'm a brake freak, and so I fully intended to replace everything. New rear Whl Cylinders--New front calipers-- New shoes & Pads. I replaced every brake line except the R/F.A new Master showed signs of sea foam after correctly bench bleeding. Rear chamber seal was sucking air so I put the old one back on.must have put a quart & 1/2 of brake fluid thru the system bleeding the freakin thing.

So, the result is this. Not running I have a high but spongy pedal. Running the pedal goes to the floor. I took it for a ride and got the back whls to skid on hard braking despite the pedal going to the floor.

I have not changed the vacuum brake booster because after all, if it works, you have power brakes. if it dont just manual brakes. I got no air in the system since bleeding.

It has RWAL and I don't think thats the broblem.

Whats your opinion? should I put a flare under the seat and walk away from it?

Bad Bowtie2 · September 2, 2014

What do the 3 rubber flex hoses look like?

Texas Husker · September 4, 2014

Sorry, missed the reply to this one. One real quick dummy check to do is to look at the brake fluid reservoir through the opening and make sure there is actually enough fluid in it. The fluid can cause a stain in the tank and when viewed, can appear to be full when in actuality, it will be empty, which leads to more air introduction and a whole lot more bleeding of the master cylinder and all corners again.... I just fell victim to this a month ago doing the brakes on our 4runner. I had no air coming out of calipers, but not enough fluid in system to function properly. Lots of brake pumping for nothing...

was the master cylinder(one put back on) bench bled or bled in truck?

Is there ABS?