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 FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On

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ewolfe0050
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Wed Oct 01, 2008 4:39 pm

Unfortunately you will need to find someone near you with a HPTuners or equivalent so they can retune your PCM. Tuning is over my head but I am lucky enough to live reletively close to Paul over at PRJ Performance so he takes care of that for me. Check on the Grand Prix forums for someone who is close to you if you can;t find anyone here.

BTY Mike, I was told the '97 is the most difficult year to tune for the Rivs and I think it has to do with the TM overriding what was commanded ... I think it pulls timing just as if it pulls timing for knock for one reason or another. You might want to give Paul a call once you find someone with a tuner.
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1wickedninja
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Wed Oct 01, 2008 5:15 pm

my abs and trac off light is on also. Were can I find the speed sensors and what do they look like? Is there a wright up on these or pics?
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AA
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Wed Oct 01, 2008 5:23 pm

Speed sensors are built into the front hubs (spindles & bearings). There is a wire with connector behind the brake rotor, you can access it from under the car. Or, you can take off the wheel and rotor, try to find it where the drive shaft meets the hub. The connector can get dirty or corroded. Disconnect each side, clean with electronic parts cleaner, reconnect. Also inspect wires for shorts or breaks. Here is a picture of the wire with connector circled. Dotted line shows where connector clips to the rotor shield:


_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
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KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
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1wickedninja
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Wed Oct 01, 2008 5:45 pm

thanks for the help AA I will check it out sat afterwork!
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deekster_caddy
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Wed Oct 01, 2008 5:56 pm

Rickw wrote:
If TC and ABS is disabled by Intense Std. PCM, then I'll need this info also. Just received PCM yesterday, have yet to install though.
Going with Derek on Friday to Dyno tune shop. He and brother have scheduled a couple of hours. I'm just going to meet and observe.
Turns out shop is less than 8 Miles from my house and i didn't even know it.
If my PCM needs additional tuning to enable TC and ABS I'd like to be able to speak to these guys about it somewhat intelligently, if thats possible.!

Rick,

My orignal PCM upgrade was from Intense and it did not affect trac control or ABS.

-D
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curious riv
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Thu Oct 30, 2008 10:08 am

Rickw wrote:
mike,
Do yourself a favor and buy the Factory Service Manual.
I did shortly after buying my Riv. and it's been very helpful and worth every penny i spent.
Do I get that from the dealer? Or do you mean just a regular 3800 book?
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Rickw
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Thu Oct 30, 2008 10:42 am

I ordered my set of Factory manuals direct from the publisher; Helm, Inc
1-800-782-4356 Mon-Fri 08:00-18:00 EST
This info is located on last few pages of Owners Manual .
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albertj
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Sat Nov 01, 2008 1:29 pm

THere ahve been a bunch of factory manual sets on EBay lately - might want to check.

Albertj
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97rivsc
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Sat Nov 22, 2008 2:08 am

Amen!Amen!Amen!

after driving my riviera for a couple thousand miles after the guy before me installed the intense pcm, the trac off light, AND the ABS light turned off!!!! I am in complete happiness right now! and like a week before the winter snowstorms. someone just try and tell me that there is not a god! lol i might be a little dramatic but HAVE YOU SEEN WISCONSIN WINTERS?????
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ibmoses
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Sat Nov 22, 2008 8:22 am

I dont think I could survive the winters up there. Just now as I was coming back from a walk out to the road and back with my dog(he had to make a poo) I was thinking and wondering about how it musty be up North in the winter.
I think it was like 23* here this morning but should rise to around 55* today.... cold

Bert tavis
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Snowdog
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Sat Nov 22, 2008 8:32 am

heya
i have a problem whit the ABS and traction controll..
the light ABS and traction off where on when i buyed my riv.
Checked 1st the fuises but they where ok. then took the wheels off ...cleaned the connections where the wire goes to abs sencore.
they where okay..no corrosion or anything..then checked brake fluid and it was on full...any more ideas what i could check?
maybe one sencore broken?
would be NICE to get it to work cos..its wintertime here..alot snow...ABS and traction controll would make the driving much safer.
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Sat Nov 22, 2008 12:17 pm

Most likely one of the wheel speed sensors has gone bad. You have to replace the entire wheel bearing assembly to get a new sensor in there. You need a scanning computer capable of reading ABS codes through the OBD-II port to find out which wheel sensor is bad. I don't know who over there might have such a computer, maybe an Opel dealer? Are there any other GM service places over there?
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Snowdog
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Sat Nov 22, 2008 2:14 pm

deekster_caddy wrote:
Most likely one of the wheel speed sensors has gone bad. You have to replace the entire wheel bearing assembly to get a new sensor in there. You need a scanning computer capable of reading ABS codes through the OBD-II port to find out which wheel sensor is bad. I don't know who over there might have such a computer, maybe an Opel dealer? Are there any other GM service places over there?



i thinked a obout a other thing tho...the lst owner mentioned somethign about that he had changed the cars front bearings whit the drive axle heads? or how they r called in englisn ?:S....maybe...he broke something...did not conect somethign good enaf...well have to find it out soon as possible. but thanks for the tip. still will be waiting for more tips
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deekster_caddy
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Sat Nov 22, 2008 2:28 pm

Hmmm, We call the Drive Axle Heads CV Joints and CV Shafts, CV stands for Constant Velocity. I recently had a rear wheel bearing come unplugged, it's worth checking the rear connections too. Sounds like you'll need a computer to read the codes and tell you exactly what's wrong with the ABS system. It could be the ABS head unit too.
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97rivsc
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Sat Nov 22, 2008 3:22 pm

so apparently the "fixing" of my pcm abs and trac was only for one day. now they are both on again. what a pain. sorry if i got anyones hopes up frown
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deekster_caddy
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Sat Nov 22, 2008 5:27 pm

97rivsc wrote:
Amen!Amen!Amen!

after driving my riviera for a couple thousand miles after the guy before me installed the intense pcm, the trac off light, AND the ABS light turned off!!!! I am in complete happiness right now! and like a week before the winter snowstorms. someone just try and tell me that there is not a god! lol i might be a little dramatic but HAVE YOU SEEN WISCONSIN WINTERS?????

97rivsc wrote:
so apparently the "fixing" of my pcm abs and trac was only for one day. now they are both on again. what a pain. sorry if i got anyones hopes up frown

What did you try to fix it? What was the code?
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97rivsc
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Sat Nov 22, 2008 9:44 pm

i literally didnt do anything it just went away for a day on its own. then came back the following morning. by 'it' i mean the abs and traction control lights.
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BKRIV
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Wed Nov 26, 2008 8:45 pm

I never gave the ABS much thought until yesterday morning on my way to work ...it was a bit slick following an early morning snowfall and I had to stop at an intersection at the top of a hill, the Riv slid down the hill and I'm ashamed to admit...out odf panic,I pushed the brake pedal a bit too hard while bracing for an inevitable broadside. the ABS did what it could but gravity and inertia were too much to overcome my slide down the hill. Fortunatly the oncoming traffic was able to avoid me and there was no big crash but in pushing the brake I blew some part of the ABS out, I've been under the car a few times but so far have only been able to find a leak just in front of the driver side rear tire. I'm hoping someone can hel;p me refine my search so I can find the lsource of the leaking brake fluid.
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Rickw
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Wed Nov 26, 2008 9:04 pm

I'm confused. You said it's leaking from the drivers side rear?
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Wed Nov 26, 2008 10:58 pm

yes just ahead of the wheel, seems to be coming from behind a block that I can't identify
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97rivsc
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Thu Dec 04, 2008 11:10 pm

so finally my pcm that disabled both abs and trac, amazingly fixed itself today (again, but permanently this time) and now no lights come on and I am one happy camper! (sorry to butt in but i just had to rejoice a bit)
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Sun Mar 22, 2009 4:06 am

Isn't there a way to just pul a fuse to turn those lights off. I really don't care for traction control and the light is kind of bothersome at night.
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Sun Mar 22, 2009 4:13 am

Is there a fuse you can pull to turn these 2 lights off? Mine are on too. I really don't care if the traction or ABS are working, but the light does bother me at night.
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Thu Mar 26, 2009 11:43 pm

Aaron, you said your abs light was also on for a short time after the install? and all you did to remedy this was a brake bleed? i'd like to figure out why the light is on. maybe i damaged one of the sensors during install.
i need a techII to diagnose hub sensors right? what can that tell me? just what side is misreading?

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AA
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PostSubject: Re: FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On   Fri Mar 27, 2009 9:08 am

I don't know about the Tech II. Might have to try it and see. In my case, the ABS/TC light came on I believe because my SS lines failed, drawing air into the line, or possibly because the system detected uneven pressure, idk. This happened twice, once for each line. I've convinced that's why.

Even with my lines having holes and leaking, my pedal never felt spongy. There wasn't that much air in the line. In your case, you must have had a big pocket of air in there.

To make matters more confusing, I had a random ABS/TC light every once and a while, seemingly for no reason. This only happened after I installed the new calipers. It was so infrequent I didn't worry about it. We're talking maybe one trip in a hundred at most. I never did solve it, but after the lines failed, and I fixed them, ABS never came back on.

I have another theory that the ABS light will come on after lots of neutral coasting with ignition off, but haven't proven that yet. I think you can confuse the PCM and ABS/TC system that way.

Finally, I did install one new hub, but I saw no correlation between this and the ABS light. It had been off for some time before I installed the hub.

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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FAQ: Anti-Lock Brakes and/or Traction Control Light/Lamp On
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