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Pontiac Grand Prix Traction Control/STS/ABS

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Comments

  • gmcustsvcgmcustsvc Posts: 4,003
    pjgolfalot,

    Could you please send me your case number in an email? I would like to look further into the case.

    Thank you,
    Caron, GM Customer Service
  • I decided to go to my mechanic and see if he can find the problem thats causing my ABS to pulsate and shutter at slow speeds and slow turns. (also the ABS and Traction Control Service Lights go on, just like with everyone else) well he found a code C0040 RF Wheel Speed Sensor Circuit Malfunction. So he changed the Right Front Wheel Hub. (it was all rusty inside) (i got the Timkin Hub) The problem is still there even worst now the ABS shutters on the first turn i make and the light go on instantly and my abs turns off and i have no abs during braking, so in the rain my wheels lockup and the car skids. I really do not feel like changing all the wheel hubs since its so expensive. So i hope some one can help me. I have a 2004 Pontiac Grand Prix GT 130k
    Im glad i was able to help some people here with the Stalling situation.
  • Have the dealier check the ABS control (computer) module (in engine compartment). that is what is is wrong with mine (2004 Grand Prix GT - 115K miles). I unplugged it as it costs over $1000 to replace and I'm not spening that much on this car. the lights stay on in car dashboard (including brake light) but ABS has quit coming on and off when it shouldn't.
  • mike5858mike5858 Posts: 1
    edited April 2011
    GM mechanic since 1983. 99% sure it is a wheel speed sensor harness at the front hub-sensor assembly. Can get harness online or at advance auto parts. Dooman part #970-042. This is for 2002 Pontiac Grand Prix
  • I'm sure you good mechanic, but I had my wheel speed sensor harnes at front hub sensor assembly changed - it didn't help.
  • gmcustsvcgmcustsvc Posts: 4,003
    ecugirl81,
    I apologize you are having concerns. Have you tried speaking with a dealer?
    Christina
    GM Customer Service
  • gmcustsvcgmcustsvc Posts: 4,003
    mike5858,
    Thank you for your assistance. Vehicles can be hard to diagnosis over the internet. It is recommended to visit a local dealer.
    Christina
    GM Customer Service
  • jml755jml755 Posts: 2
    "Vehicles can be hard to diagnosis over the internet. "

    Uh, excuse me, but I disagree. The reason I am on here tonite is that my daughters came home for the holiday weekend with my '01 Grand Prix GTP (131k) that they are using at college. They complained that the car was "shaking". I had previously replaced p/s pumps (twice) as well as injectors, coils, etc. that caused poor performance, misfiring and rough acceleration. I thought that was what they were describing. I test drove it a couple of hours ago and found the ABS and Trac lite came on with rough "shaking, especially at low speeds. Puzzled by what it could be, I got on the internet and in 15 minutes I find the likely cause of the problem and lo and behold it is a common problem.

    Now, it is fair to say that I cannot say for sure EXACTLY which of the components discussed online are the problem on my car, but I do know where to start and will start diagnostics in the morning. I have already replaced the LF wheel bearing (including sensor) over a year ago, so I know the symptoms when a bearing goes bad. I don't think it's my bearings and will start with looking at the the speed sensors and harnesses. Last thing to replace will be the ABS computer and I may just leave it off, as others have suggested.

    And the original comment: "Vehicles can be hard to diagnosis over the internet." makes me laugh. It can't be any worse than paying a GM dealer who has the benefit of training, diagnostic aids and service information from the manufacturer big $$$ only to find out the problem is NOT diagnosed correctly and fixed. Plus a dealer will consistently deny that it is a common problem (BTDT with LIM on Grand Prixes). GM (and their dealers) could get away with this years ago when there was no way for owners spread across the country to communicate. But the Internet and these forums are a huge benefit to those who can't afford to just take the car to a dealer and write check that sometimes is larger than their mortgage payment for REPAIRS to a car.

    And every time I hear about some new "feature" on a car (cameras, memory seats, motorized doors, etc) all I think is "how much will it cost when THAT breaks?"

    So, yes, Virginia , there IS a Santa Claus, but it's not GM, it's the Internet.
  • jml755jml755 Posts: 2
    update:
    I got a Timken hub locally today ($117). Was going to replace both fronts but they only had one. I had replaced left front last year (but not a Timken) and left turns seemed to be worse than right turns, so I took a chance and took off the right hub. Found the x-mas tree clip that holds the sensor connectors out of the way of the half-shaft had broken and the sensor wire plastic sheath had been rubbing on the spinning shaft and worn away, exposing the 2 wires inside. The insulation on the 2 wires was still ok, but when I removed the hub I found that one of the wires had broken right where it enters the hub. No way to solder that back on. Suspect that the loose assembly had caused the wire to constantly vibrate/flex and finally break.

    Had to heat up one of the 3 bolts that holds the hub on with my oxy/acet torch and accidentally melted the HARNESS connector. Darn (not exactly what I said). Got the new hub on and scraped enough melted plastic away from the connector to plug the new hub in. (Will get a new harness monday, $38). Took it for a test drive and NO ABS or TRAC lite! Yippee. But...... power steering fluid all over the floor. The drivers side boot on the steering rack was leaking fluid. Looks like a new rack & pinion steering gear is next weekend's job.

    But thanks to this forum, I got pointed in the right direction very quickly and for $117 solved the problem (oops, forgot to add the new harness cost, ok under $160).
  • kburriskburris Posts: 1
    The guys not trying to jip you from what i can tell.if you have any other problems then the wheel bearing/hub the diagnostic test most likely won't read the issue causing the abs/traction lights from staying on.the wheel bearings on the back tires don't have traction control.so replacing it with an aftermarket hub doesn't make a diffrence.paying 500 dollars to get a new hub assembly installed seems really steep to me,but keep in mind your gonna pay top dollar the the namebrand,just like anything else.find a mechanically inclined friend to do it for a case of beer.i've replaced a few hub assemblies myself and it's not technical or very time consuming,usually takes about 45 minutes tops.another easy quick way to see if an after market hub assembly will work for your front end is to go to auto zone and purchase on for 130 to 150$ and disconnect your plug to your hub assembly,(located on the bottom/inside of your fornt tires,very acessable)and plug the store bought one in and check your abs/traction lights.make sure to check both sides lol,if it doesn't resolve the problem return the hub.or it might be a problem in your wiring,can'[t help you there lol good luck
  • lclay23lclay23 Posts: 1
    I too am having the same issue with the "service traction control/ABS" lights coming on with the pulsing and shuddering, feeling like the ABS is kicking in when it shouldn't. I understand under some constraints that it should be looked at by a GM tech, but when the issue has no explanation to solve the problem except throwing money at it, well that just seems wrong. Especially having to pay for the diagnosis that there's no explanation. For the stalling issues, I will be cleaning the throttle body, as that seems to have worked for several people on this forum. With the braking issues, it seems to me that GM should take note of forums like this and address the problem and help it's customer. Negative publicity is not good for business. Christina, what is your email so I can get more information. Thanks
  • gmcustsvcgmcustsvc Posts: 4,003
    lclay23,
    My email address is in my user profile. Please include your Edmunds username as well as your VIN, current mileage, involved dealer, as well as your concerns. I look forward to your response.
    Christina
    GM Customer Service
  • courtniscourtnis Posts: 1
    I'm wondering if you might be able to help me. I just had front and back brakes as well as the rotors replaced on my 2004 GTP. Unfortunately, we were in a hurry due to time retraints and I am wondering if the bf forgot something. After replacing them, now everytime I get in the car my ABS, Service Traction Control soon, Stability, and effortless steering (or something like that) lights all come on. After reading around I am thinking maybe there is a wheel sensor unplugged or knocked loose maybe that we didn't notice. The bf said he didn't unplug anything like that though. Oh and we also replaced all spark plugs and wires that day too (just in case that could mean something as well, something up front that could have got loose). My brakes work but the ABS don't seem to be or Traction Control. My steering seems fine though. I'd like to get some ideas to start with/look for and maybe any assistance in finding proper diagrams etc. I'm a girl LOL but am intersted in figuring this one out. I am guessing it has to be something not done right during the brake job because all of those lights weren't on before. Thanks for your assitance in advance!
  • mstanley1mstanley1 Posts: 1
    I have been having the same issues! This is my 5th pontiac and never have i had this problem... My ABS ,Traction, Steering and brake lights have been coming on as soon as i start my car.. It started by when id first start it and start moving it sounds like a growling for a quick second then stops.. then began to start that noise when id be pulling in to park.. ive had it hooked to a diagnostic machine and at first it threw a few codes.. one being the main abs computer and sensors in the wheel hubs.. so the hubs was replaced.. started it and it threw an new code for my steering sensor..when i took it back the next day it wouldnt throw that code so we didnt replace that.. i then drove it directly to the GM dealer and they said that it was pointing to the abs module system which is i guess the heart of all this .. Guess its tied in together.. but then was told that they was only about 90% sure that this was the problem.. after being told i was gonna be paying .. could there be something that is being overlooked that would be the problem.. i hate to sink this into it and not be the problem..
  • ecugirl81ecugirl81 Posts: 9
    I've made several posts here about this issue (for my 2004 Grand Prix). After having EVERYTHING replaced except the ABS computer control module it has become obvious that this is the problem. I have a friend who had same issue and that is what cured his, but the part is between $1000-1200 so I'm not investing in it. Just unplug the ABS control module and the growling and ABS kicking in when it shouldn't will stop. You won't have ABS but of course brakes work. The ABS/Traction Control & Brake warning on the digital display will ding and flash everytime you start it, but for me that was the only thing else I'm willing to do. I'm just waiting until January to ditch the car, which I love other than this issue which is frustrating. Don't look for GM to help you out. Many, many others have tried and they won't do a recall although it obviously needs to be. :( :mad:
  • avila5433avila5433 Posts: 2
    After gaining speed from 60 to 80 and BF jerking the car to the left real hard these three lights came on. One is service brake system, the other service abs system, and lastly service traction system. I don't know where to look. I had it hooked up to a computer to check and it gave me no code or anything. Could someone help besides GM ppl? Thank you!
  • hesermonhesermon Posts: 3
    Mike, hope you can help me with your experience. Just bought an 02 Gran Prix GT, the ABS and Traction Off light are constant on. Using a Genesis I've determined that both rear sensors are reading correctly but both front sensors read "2MPH" constantly rather I'm moving or not. Checked the front sensors at the wheel with a volt meter and both showed to be working when spinning the front wheels by hand. The right front has a history code and the left front has a history and current code. Tried to clear codes and the lights never go off, as soon as I turn the key back to the on position both lights come back on. I'm thinking short in the harness as you've described. I see that Dorman offers one for the right side but not for the left and that is where there is a current code. Will a damaged harness on the right cause codes on both sides? Do you know of a replacement for the left side or can I just cut and splice in new wire? Thanks in advance for your advice and help!
  • gmcustsvcgmcustsvc Posts: 4,003
    mstanley1,

    I apologize for the problems you are experiencing with your vehicle. Please keep us posted when the issue has been taken care of. If you have any questions or concerns please feel free to contact us directly.

    Thank you,
    Caron, GM Customer Service
  • hesermonhesermon Posts: 3
    I found that both harnesses to the ABS sensors had deteriorated and broken about 4-6 inches from where they plug into the sensors. Fixed both sides and now the ABS and "TRAC OFF" lights don't stay on but instead they both blink together for the first several minutes while driving. There are several history codes stored but no current codes. History codes will not erase using a Genesis scanner????? So far I've noticed no shuddering or other unusual braking issues, just the #@$% lights! Can anyone offer up some advice on what is causing them to flash? Should I try a used ABS module or ECM? Will I likely just get another module or ECM with the same issues? Any ideas would be greatly appreciated!
  • avila5433avila5433 Posts: 2
    Update to my post. I posted about my BF taking off and jerking my car to the left then all these lights came on. ABS, brake, and traction control. I forgot to mention the steering wheel hardened. Well today we found out that the wiring harness was stripped and getting hit by the belt. We just retaped it and moved it away from the belt. All three lights came right off and my steering wheel loosened right up. Everything is back to normal....I guess if anyone is havong trouble with lights only should really check the wiring harness, make sure they're in good condition.
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