Hello CC Reps. I am having an issue with my car, which is still under the extended powertrain warranty. It is one of many issues I have had in the year I have owned the car, and one not fixed by a dealer visit, as all others have been. Needless to say at this point, I believe this is my first and last GM product, but I digress.
The car had a miss on cylinder 6, so on the dealership's (Walter Chevrolet in Pikeville) advice I got all the plugs changed as well as the coil pack on cylinder 6. This worked great and the car is now miss free. After this though, and in a snowstorm on an untreated road, my car began flashing "AWD OFF" and indeed I could feel it kicking out! This kept happening, with the system engaging and disengaging and the car beeping at me constantly, rattling my nerves already rattled by the weather conditions. Soon the ABS light began coming on indicating it was out, then followed by "Steering Assist off" and the Traction control disabled light. I luckily made it home safely but of course made a trip to the dealer.
They called me and told me, because the car had a miss code leftover from before the plug/coil change, the now non-existent miss was causing the car's AWD, ABS, Steering Assist, and Traction Control systems to constantly engage and disengage. Perplexed, I asked how a miss (of course I knew it was now gone, but I played along a bit) caused these systems to malfunction. Without any in-depth explanation, I was told Gm designed the car to randomly engage and disengage these systems if a miss was detected (mind you, it never did this for the weeks the car had a noticeable miss). So, stunned and distressed as my wife takes the car to leave, they try to charge me $95 because obviously with the car needing new plugs after 150 miles it wasn't covered under warranty. After some back and forth, they waived that fee but told me unless I let them change all the plugs and coil packs again, they would not help me under warranty.
Did GM really design the car to malfunction in a manner that is very dangerous to the occupants when an ghost miss occurs??? If so, I definitely have the wrong manufacturer...