Traction control light (and abs light)
I recently had a traction control light coming on in my Pontiac G5 GT (didn't see a forum for G5). When the traction control light was on, the car would jerk when shifting gears (it's an automatic). After time, the abs light came on as well. At this point the jerking seemed to stop. I took it into the shop. They ran a test and said it was probably a bad wheel sensor. They replaced the bad wheel sensor and gave the car back. Within minutes, the traction control light came back on. No abs light this time, and the car doesn't seem to be jerking anymore. I took the car back in and they said the code was leading them back to the abs, meaning it's probably the abs module causing the problem. If so, it would need to be replaced. This will cost somewhere between $450 - $600.
I'm wondering if this all sounds right? Did they even fix anything the first time around? Thanks!
Hi @kyleguy ,
Go to another shop for a second opinion on the codes. Try AutoZone , apparently they do it for free.
Did they give you the "faulty" wheel sensor part back when they replaced it?
You should always ask for the bad parts back when they are replaced. If only to prove they've done something. After all it is yours. They may have a stock of 'bad' parts available to give back, but that may be me just being cynical.
Thanks, @jayeff . And no, they didn't give me the faulty sensor. I didn't think to ask. I understand cynical. It's hard not to be. I really hope I'm wrong in this case, but paying $275 only to find that the light is still on, and then being told it will probably cost another $450-600? I don't know. I'll swing by AutoZone in hope of getting some helpful information. If you think of anything else, please let me know. Thank you very much.
@jayeff So I took it too O'Reilly. They scanned it and got back "C0561." I'm basically finding this about it:
"In the case of this GM code, the electronic brake control module (EBCM) is what disables the traction control system or the vehicle stability enhancement system. The code means the EBCM is receiving faulty data from other modules or is faulty itself."
That's essentially what the guy at O'Reilly thought as well. Said it could be a connection issue somewhere, or an issue with the module itself. He also said that the code was in the car's history, rather than showing up currently; although I have no idea what that means.
I'll also mention that the Check Engine light is on. The shop had told me this has to due with emissions, but that we don't test for that in Michigan, so it's not a problem.
In conclusion, I guess it sounds like the shop might be right that it has to do with ABS module? Whether or not the "faulty" wheel sensor actually needed to be fixed, I have no idea.
@jayeff , @kyleguy if theres a problem with the EBCM it will not cast a ABS code or cause the ABS light to come on . So yes there was probably a wheel sensor gone . The reason the the light for the traction control was off when leaving the shop was because the mechanic reset the codes and it took a few minutes to launch the code again. Obviously the mechanic didn't take the car for a test drive to check his work . Poor practice on the mechanics part . As for getting the parts back I always return the old parts in the new parts box . I make a habit of it for 2 reasons . One the customer can see a new part was put on and can see the old warn out part and secondly this way I dont have to dispose of them myself
Thanks, @jimfixer . So in your opinion, it's entirely possible that they did in fact fix a wheel sensor, which took care of the ABS light. And now the traction control light is still coming on due to a separate issue: communication with the EBCM, perhaps?
The strange thing is that the traction control light has been coming on for months now. I had it looked at a while back and the mechanic said it was probably a wheel sensor. I didn't have the money to fix it so I left it alone. The ABS light just recently came on, right before I took it to the shop. Them putting on a new wheel sensor fixed the ABS light, but not the traction control.