Last post on Jan 18, 2013 at 12:56 PM
You are in the Pontiac Grand Prix
What is this discussion about?
Pontiac Grand Prix, Car Safety, Sedan
#157 of 204 Re: Traction Control/ABS [lm04]
Feb 24, 2012 (7:37 am)
At this time, you don't have any open recalls on your Grand Prix. Also, just for your own information, you do still have an Emissions Select Component Warranty that is good until 12/15/2012 or 80,142 MI, whichever comes first.
I'm sorry to hear that the replacement of the sensors did not remedy the issue you're having with the traction control. When were you in at your dealership? We'd be happy to give them a call and follow up with them about your visit. Please send us an email with more information (include your name/Edmunds username, phone and address, a link to this post as my coworker Christina who answers incoming emails will need the last 8 of your VIN and current mileage, and the name of your dealership).
GM Customer Service
Feb 24, 2012 (10:54 am)
I am having the same problem with my 2004 grand am, I have spent over 800.00 on the brake system and i am still having the same problem, when my light doesn't come on, my brake peddle shakes, then goes all the way to the ground, then i hear a loud noise. But when the abs light comes on, i dont have a problem with the car.. Does anyone have any idea whats going on? I have taken the car to 3 different dealers
#159 of 204 Problems with hesitation
Feb 29, 2012 (8:29 pm)
hi sorry to be asking this, but there seems to be a problem with my car.. I have a 2002 Pontiac Grand Prix GT and when it shifts down into overdrive, it drives fine, but when I give it just the slightest bit of gas it acts like it is running out of gas, but if i give it more gas to kick it out of overdrive it runs like a dream what could this be.. also my stereo has quit working, along with my ON*star thru the car itself, I can bypass the stereo speakers in the car and the radio works, but the onstar dont, any help would be greatly appriciated(spelling)
#160 of 204 Re: Traction Control/ABS [burtonz]
Mar 02, 2012 (8:08 pm)
I replaced the harnesses for the speed sensors in both front wheel assemblies. This is a common fix and most garages will fix everything else, I.e. hubs, shafts, etc. before replacing these harnesses. All my ABS/traction contro/stability system issues disappeared as soon as the harnesses were replaced. Found the fix after much searching on the internet
#161 of 204 Help Me!!!!!!!
Apr 01, 2012 (2:42 pm)
I have replaced the electronic brake control module on my 2004 grand prix GT with on from a 1999 grand prix se. Will that work or will I have to get a new one please let me know, thanks.
#162 of 204 abs light still on
Apr 07, 2012 (6:54 pm)
My women has a 2000 grand prix, 3800 v6 and the LR (left rear) wss (wheel speed sensor) was not reading. i have replaced it and everything seemed to go well, but now the abs light doesnt go off. i have cleared the codes with my scanner and the low track light comes off then turns back off again. any ideas whats going on. ????
#163 of 204 Re: Traction Control/ABS lights on
Apr 18, 2012 (9:14 am)
I have a 2002 Grand Prix GTP with the aftermentioned ABS light & TCS lights on. I searched for hours looking for a proper way of diagnosing this issue. Came upon this site, went though 17 pages, & no one has the proper way of diagnosing. Even the GM reps won't help you. They all say, send me your vin etc, etc. Even the dealers are hit & miss with the repair. People just don't know how to diagnose any more. If the scanner doesn't tell them exactly the problem, they don't have a clue. I gave up looking on the internet for the answer & decided to look for myself
I am old school. It does not have to be difficult. It's nothing more than nuts, bolts & wires. It's not that hard. But you do need a digital multi meter to diagnose it.
Each wheel has a AC gernerator that is used to tell the ABS brake module what that wheel is doing. These sensors are nothing more than just a coil of wires with an input & out put lead. Either they work properly, are open( broken wire) or are shorted to ground. Unplug each one & check the tresistance in them. If you have one that is different than the others----- youve found a problem Resistances values need to be 800-1600 ohms.
Once you've confirmed the sensors are all good & the lights are still on, there are other issues. You need to check the wiring from each wheel sensor to the ABS module. Again very easy. Plug all the wheel sensors back in, & then unplug the main plug at the ABS module. Remeber each wheel has it's own set of 2 wires that tell the module what's going on.
With the pin end of the plug facing you you want to check the wiring to each wheel. There are VERY small numbers moulded into the corners of the plug. Looking at the pin end of the plug the numbers start at 1 in the upper right side ending in 11 upper left side. The last row starts with 20 in the lower right & ends at 30 in the lower left.
#2 & #3 pins Right rear wheel
#4 & #5 Right front wheel
#20 & #21 Left Front wheel
#22 & #23 Left rear wheel.
Again check the resistance for each wheel at these pins. They should all be very close to the values you got at the wheel sensors alone. If there is a reading that is out of place, then the problem is in the harness, now you have to find it, but at least you know which area to be looking for.
If all your wheel sensors are good, & all your harnesses are good then you need to be looking at the ABS module itself. I'm sure theres a way of diagnosing this also WITHOUT a scanner ACCURATELY, but I didn't have to go that far because I found the issue in the left front wiring harness under the rad. A wire had broken. Repaired it, lights are out.
If you have any questions, I'll be happy to try & help you out, so you won't get it royally from your friendly local GM dealer or corner garage that BOTH don't know how to diagnose something.
#164 of 204 Re: Traction Control/ABS lights on [liteweight]
Jun 10, 2012 (11:09 am)
Also make sure your post connection at the ABS control module is clean and no corrosion. I ran all the continuity tests and everything checked out. Was about ready to have the control module replaced when I noticed some corrosion in the bottom of the connection box on the ABS unit. Went to O'reilly's and for $7.95 bought a can of electrical connector cleaner. Scrapped lightly with a small screw driver and spraying down to remove the corrosion, let it all dry and then used dielectric grease on the pins. Put back together and so far so good. Thanks 'liteweight' for the trouble shooting info on the wires coming out of the ABS box or I would not have found this.
#165 of 204 Re: TCS/ABS lights come on, followed by difficult steering [fiacchino]
Jun 13, 2012 (7:28 am)
I had the same problem with my Grand Prix where the hub was replaced to fix the ABS/TCS warning light issue and both ABS and TCS engaging. The fix cost $760. My car is a 2007 Grand Prix with 75,000 miles on it. I did write GM about it in regards to compensation and they offered $175 in store credits. I've owned a 2006 Buick Ranier which was an absolute lemon. I also own 2011 Traverse (under warranty) that's having the same fuel guage problems that the Buick had. I've owned 15 GM vehicles over the course of 33 years and the Traverse and Grand Prix will be the last GMs I ever own.
#166 of 204 Re: TCS/ABS lights come on, followed by difficult steering [schatzee48]
Jun 13, 2012 (1:39 pm)
Thank you for your support for GM over the last few decades - it is certainly appreciated. I see that you mentioned a current vehicle concern (the fuel gauge on your Traverse) and wanted to check in to see how the repair progress was going. Has your dealership been able to resolve it or are they currently working on this for you?
GM Customer Service