abs,traction control lights. Pontiac Grand Prix.
We own two of these cars and they have treated us well for service up till this issue showed up.
After reviewing the comments from this forum and having my car diagnosed at the dealership I decided to go ahead and replace the simple wiring harnesses mentioned here and my car is back to normal. The job took about two hours for both sides and we soldered the splice joints then covered them with shrink tube.
The diagnostic at the dealer showed a right front circuit code in more than one instance of having it checked. Of course it doesn't tell you that a wire is broke, but it is a clue. In my case the lights came on almost immediately upon tires rolling when the wire finally broke, or broken ends couldn't touch each other.
My car had all of the issues mentioned here with the lights and pulsing brakes.
I paid $128.00 for both harnesses, complete, just splice them in, from a reputable GM Dealer.
I'm happy to have the best car I've ever owned back to normal and now know to look for this if the other one has this issue. The car I drive has 120,000 plus a little and the other is @ around 90,000.
I should also mention that when disassembling the old harness it had moisture, sand and salt inside the protective casing. 4 inches from the connector end is where it broke. Right side of car.
Thanks for the talk here and good luck to those of you with this issue.
Steve572, in Michigan