Last post on Jan 18, 2013 at 12:56 PM
You are in the Pontiac Grand Prix
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Pontiac Grand Prix, Car Safety, Sedan
#167 of 204 2004 Pontiac grand Prix GT
Jun 21, 2012 (7:53 am)
Honestly, I don't have time to read all of this thread. Here is my issue:
Just purchased this car with 95,200 miles on it. Rubbing noise coming from brake area, ABS wants to kick in when going at slow speeds and in the midst of making a turn, the Check ABS light is coming on and the car seems to be stalling.. It will crank fine but then the next time it wont and you can smell gas, like it is getting to much fuel... remember when the older cars would get flooded out? That smell.. I can't have my 17 year old driving a car that is potentially dangerous. WHAT IS THE PROB? Warranty is most likely not an option for us so repairs need to be accurately diagnosed and cost effective! Lastly, we have checked the wheel bearings and they seem fine.
#168 of 204 Grand Prix 2005 ABS/TC Lights on
Jul 09, 2012 (12:48 pm)
Well I have the same problem as most of you with the ABS and Traction Control lights coming on.
I was able to contact Christina at GM, who seems like a very helpful person, but unfortunately she could only offer me a contact for customer service here in Canada. I contacted them and they were absolutely no help at all. I did put a meter on the pins on the connector that connects to the EBC and I got very similar readings. So my next step is to take the readings at the wheel sensors.
It's been too hot here lately so I will wait for a cooler day to jack the car up and remove the wheels to check the readings at the wheel sensors. don't really know what else to do.
I have a friend with a scanner and of course no codes show up.
#169 of 204 ABS TRACTION CONTROL LIGHT
Jul 09, 2012 (2:29 pm)
The wire harness that the wheel speed sensor plugs into have a very high failure rate. I changed mine out a few weeks ago & solved my same issue. Harness was had from NAPA auto parts for around $35. I also seen the same part on Amazon. You need a scanner that can do "ABS" codes thats why you are not coming up with any code.
#170 of 204 Re: ABS TRACTION CONTROL LIGHT [eddie71]
Jul 09, 2012 (2:53 pm)
was that NAPA in the US or Canada? where did you splice the new cable in.
Thanks for the help.
#171 of 204 Re: 2004 Pontiac grand Prix GT [fkeson]
Jul 09, 2012 (7:58 pm)
#172 of 204 Re: Traction Control/ABS lights on [liteweight]
Jul 10, 2012 (3:17 am)
Hello lightweight, i really appreciate your detailed explanation on how to check where the problem is. I managed to put a meter across the points as you described above but only on the connector for the module itself. All the readings were very close to each other so I'm thinking that even if there was a bad sensor it would have showed up on the meter? My problem is very intermittent so I'm not sure it would show up because the lights never stay on all the time. When they do come on once I shut the car off and re start it the lights are gone. This is why I really think it's a bad wire in the harness somewhere. I really have reservations taking it to a Dealer or even a Garage as they will just start changing parts and this could become very costly.
Did you end up replacing the harness or did you just repair where you found the break in the wire? I'm thinking I will try and replace the left side harness as this seems to be the side that is causing the problem for most people. Just wondering what is involved in re routing the new harness? Looks like it could be quite a job? And where would I splice in the new harness? Probably close to the module just before the connector? If this don't work the only other option I see that makes sense to me is to pull the fuse for the ABS and run the car without ABS. Not sure if that will work either but I'm hoping someone here has tried?
Thanks For The Help
#173 of 204 Re: ABS TRACTION CONTROL LIGHT [algp2005]
Jul 10, 2012 (4:52 am)
US Napa. Mine was the passenger side. Keep removing the cable & it will go into a large loom right behind the radiator. With your head on the ground looking up into the engine bay it is right in front of you. Leave some wire & cut it off there. The new cable comes with butt connectors but I chose to solder & heat shrink the connection.
#174 of 204 Re: Traction Control/ABS lights on [algp2005]
Jul 10, 2012 (4:55 am)
Replace the harness. not involved at all, 10 minute job. Follow old harness to end & cut off there leaving some to attach new harness. Very easy fix. Good luck
#175 of 204 Re: Traction Control/ABS lights on [eddie71]
Jul 10, 2012 (5:52 am)
Thanks Eddie, looks like Napa here in Canada only have the one for the passenger side. I wonder if this will work on the drivers side maybe just different color wires? Another question, when I follow the old harness to the end will it not take me up to the control module? Or does it actually stop at the rad. and continue from there in another harness?
#176 of 204 Re: Traction Control/ABS lights on [algp2005]
Jul 10, 2012 (7:19 am)
Correct diagnosing has become a lost art in most stealerships, & garages today. The mechanics rely all too often on just replacing parts till they find the problem through trial & error (if they ever do). This is how they are trained today. The end result is the customer lands up flipping the bills on the mechanics quessing game for parts & labor replacing parts that don't require replacing.
The customer relations hotline at corporate levels are a freakin joke. Their job is to nothing more than relay phone numbers to their internal network of dealers.
Good to see you've taken the incentive into doing it yourself. The meter readings your getting are telling you there is contact in each circuit WHILE your testing, but remember all you need is a break in a wire that is making contact through a single strand of wire. What you'll need to do is flex the wires in the most common fail points, you'll see where they bend, while having an audible meter attached to that circuit. The most common areas of faults are in the front.
I have access to a wiring diagram for these cars if your interested. Just gotta fiqure a way of sending it to you since I can't find a way of attaching a file here.
Let me know