What fuse should i pull to test if my abs hydraulic unit is failing, the one under the hood or the one inside the driver door/dash or both? I have been having trouble after getting my wheel bearings and pads replaced by dealer, and i am trying to prove that the unit is damaged because they did not open the bleeder screws when pushing the caliper piston back in.

 

2000 trailblazer if it helps

 

What are the symptoms? What makes you think the unit is failing? Big problems with these sensors, most of the time dirty or broken wire. Many people due the pads and due not open bleeder. Could realy be no big thing. Pulling the fuse is not going to tell you what's wrong it will just pull the abs out of the loop.

 

The ABS was acting up, thats why i was asking. All kinds of vibrating, and my rear passenger tire was locking up at random. I wanted to eliminate the abs so that my rear brakes wouldn't get toasted. They found out it was not the sensor(s), so tonight they are working on it. (just bought it from dealer-so its their problem once again) I'll post an update with what they find.

 

Sorry i never got back on this one, the vehicle got wrecked by a side collision just days after being repaired. I went out and found 2000 "trailblazer" 4 door to replace it. Needed the extra space and car seats are a PITA with only one door leading to the passenger compartment anyway. It does suck not having a locker though.