Cadillac Owners Forum banner

1 - 13 of 13 Posts

·
Registered
1994 SLS
Joined
·
49 Posts
Discussion Starter #1
Screwed up my Rear Disc Brakes!! Help!!

:bonkers: Okay I replaced my rear disc brakes, rotor and pads today. It is a '94 Seville with ABS. Well I managed to put one pad on backwards on the inside of the passenger rear. On my test drive it was grinding very badly and I could not figure out what it was. I took the wheel off, and removed the caliper bolt and swung the caliper up out of the way and figured out that the back of the inside pad had put a couple of small grooves in the rotor. The pad was not in that bad of shape since I had only driven it a short distance so I reversed the pad and re-installed it correctly.... sheesh... first time for everything I guess. Anyway I was planning on biting the bullet and picking up a new rotor and pad set tomorrow just to fix this or I guess I could take the time to take it off and take it down to a local machine shop and have them turn the rotor

My problem now is my Anit-Lock brake light is on permanently and my Traction control is off since the ABS is not working. Looking in my trouble codes I have a new code T033 which relates to a RR Wheel Speed Sensor Continuity Fault. How do I fix that?trouble codes. IS there anyone out there that can help me? Should I replace the rotor and pad? Or just have it machined? Or is the fact that I did this what caused my ABS light to come on?!? Thank you for any help with this!:bonkers:
 

·
Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
·
19,261 Posts

·
Super Moderator
White Diamond '03 DHS (with DTS floor shift)
Joined
·
86,781 Posts
Re: Screwed up my Rear Disc Brakes!! Help!!

My problem now is my Anit-Lock brake light is on permanently and my Traction control is off since the ABS is not working. Looking in my trouble codes I have a new code T033 which relates to a RR Wheel Speed Sensor Continuity Fault.
Check the wheel speed sensor connection on the backside of the hub. I suspect you knocked it loose and it just needs to be plugged back in.

As for the rotor, it all depends on how bad it was gouged. If it needs any more than a skim cut to true it up, I'd replace it.
 

·
Registered
1994 SLS
Joined
·
49 Posts
Discussion Starter #4
Re: Screwed up my Rear Disc Brakes!! Help!!

I'll check the speed sensor plug or connection! Thank you! It's not grooved enough to cause any significant issues for a couple of weeks so when I have time I think I'll just bite the bullet and buy another one.... lessons learned! PAY ATTENTION TO WHAT YOU ARE DOING!!!! You think that I would know that by 48 years old!!!
 

·
Registered
1926 Model T street rod, 2000 Jaguar XJ8, 1999 Corvette.
Joined
·
6,737 Posts
Re: Screwed up my Rear Disc Brakes!! Help!!

A slight groove wont harm a thing! leave it alone till you need rear pads again IMO.
 

·
Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
·
19,261 Posts
Re: Screwed up my Rear Disc Brakes!! Help!!

I'll check the speed sensor plug or connection! Thank you! It's not grooved enough to cause any significant issues for a couple of weeks so when I have time I think I'll just bite the bullet and buy another one.... lessons learned! PAY ATTENTION TO WHAT YOU ARE DOING!!!! You think that I would know that by 48 years old!!!
-----------------------------
I bet you'll NEVER do that again - :rant2::thepan::bang2:
 

·
Registered
1997 Cadillac STS (BOSE w/AUX In, Massage Seats, URPAS, "Z")
Joined
·
6,405 Posts
Re: Screwed up my Rear Disc Brakes!! Help!!

Is funny when people say I have the '9x Sevile/Eldorado with the V8 motor, or I have the one with ABS.
What is worst I went even to some dealership looking for brake pads and I was asked "Is Seville equipped with ABS or not"?
HUH!!!!!!!
These things were standard since the '80s in these cars, and to be honest I am yet to understand what would be the difference between the brake pads or rotors for cars with or without ABS?


As for your issue, is very common for a DIY job to end up with a loose wheel speed sensor, check it, you will find it disconnected.
 

·
Registered
1994 SLS
Joined
·
49 Posts
Discussion Starter #8
Re: Screwed up my Rear Disc Brakes!! Help!!

You nailed it Ranger! Somehow I managed to pull the sensor plug out. Popped it back in and everything is fine. At least in that regards. Thank you!

And thank you for the input Carnut, I'll just leave 'em be for now.

And yes Basscat, this will be permanently in my mind when doing any more brakes in the future.... sheesh.... Kind of like the time I identified a set of very dirty Torx screws as Hex Heads and spent 2 hours trying to unscrew them all the while completely destroying their heads..... never mind. Yeah, now I'm pretty OCD about making sure I know what kind of tool I need for what kind of fastener!
 

·
Registered
1994 SLS
Joined
·
49 Posts
Discussion Starter #9
Re: Screwed up my Rear Disc Brakes!! Help!!

Okay now that I have driven it on the freeway I got out of it and man could I smell hot brake pads! Mainly on the drivers side rear. Is there an adjustment that I need to make on the parking break? It seems like maybe it is not releasing as well as it should. Any suggestions?
 

·
Registered
1994 SLS
Joined
·
49 Posts
Discussion Starter #10
I replaced my rear disc brakes on my 94' Seville but now after driving it on the freeway, then when I stopped and got out I got a face full of really hot brake smell! Any suggestions as to what I might need to adjust maybe in the parking brake? I didn't get any error codes or feel any drag. When the car is off and in Neutral, with the parking brake off it is easy to push the car so it doesn't seem like the parking brake is hanging up. Is it just a drive it a little more and it will break in the new pad and rotor?
 

·
Registered
1997 Cadillac STS (BOSE w/AUX In, Massage Seats, URPAS, "Z")
Joined
·
6,405 Posts
Re: Screwed up my Rear Disc Brakes!! Help!!

No adjustment, you screw the piston in the caliper far enough to slide the caliper over the pads. Then if is any "looseness" the piston will be pushed out to compensate (there is a screw inside the caliper that the piston mounts on, that's how the parking brake works). This actually happens constantly as the pads wear out.
 

·
Administrator
2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
Joined
·
68,440 Posts
New pads, new rotors, heavy braking = brake smell for a while

Constant smell and hot rotors = something's wrong.

In your '94, do the rear caliper pistons screw back into the caliper ?? Later models MUST have the pistons turned back into the caliper - it's part of the automatic parking brake pad wear adjustment system.

I merged your two threads on the same car, same problem, same time frame.
 

·
Registered
1926 Model T street rod, 2000 Jaguar XJ8, 1999 Corvette.
Joined
·
6,737 Posts
Since about 79 or so, most rear disc brake GM cars required you to rotate the piston into the caliper to make room for new thicker pads. Failure to do this causes brake drag. It also requires that the parking brake adjustment be checked after pad replacement. Maybe you should have someone inspect your work!
 
1 - 13 of 13 Posts
Top