Horn Assembly problems of the 2004 GMC Yukon

The "stability control disabled" sensor comes on followed by "reduced engine power" and my vehicle won't go faster than 5mph. This has happened at least 6 times in the past several months only upon start up of the vehicle. Sometimes, if I wait a couple of minutes and restart my car, it'll start just fine but the check engine light comes on. I first brought it into hendrick Chevrolet on 10/15/12. They charged me almost $700 to replace "app sensor assembly". Then I brought it in again on 11/6/12 for the same issue. They replaced the "connector at the throttle body" and charged me $223. 09. The issue temporarily went away. I then brought it back on 12/20/12 with the same issue but this time the check engine won't turn off as a result of the reduced engine power-stability control disabled warning. They simply reset the warning and that was it. Til this day, I continue to have problem with this vehicle going into reduced engine power/stability control disabled. This has become a constant issue and thorn on my side and each time I bring it in for service, they always tell me it's something else. I have read many of the same issues other owners have had. Why haven't there been a recall on this???.

While driving, the driver's power side seat begins to move forward. The dealer states there was no solution at this time. The vehicle was taken to the dealer on twelve occasions. The driver's seat memory switch was inoperative, there was noise at idle and was unable to be duplicated, the satellite radio would lose frequency, the seam on the drivers seat material was wearing and the horn was delayed.

I purchased a 2004 Yukon xl on 10-19-04 and I have had problems with the vehicles air bag system ever since. I have taken my vehicle in on at least 12 occasions, with repeat visits for same problem usually the same day. My car has given off numerous codes which include but are not limited to the following: b0026, b0040, b0041, b0043, b2470, b0229, b3770. I have taken my car to 3 separate dealerships where they have replaced harnesses, wires, connectors etc. None of this seems to have worked. I have for the last 6 months also have had NY horn blowing intermittently. I have called onstar to perform diagnostics on my vehicle and they have told me that the car has numerous codes coming up, and that I should not drive my vehicle until corrected, because the air bag may deploy on its own or it may not deploy if my car is wrecked. This is a very dangerous situation and I do not feel safe in my car, but I do not have any other choice but to drive it because I do not have an extra $40,000 to buy a new one. I have explained all of this to GMC's arbitration department, but they have sent me several letters stating that they are not willing to buy my car back. My family's lives are not replaceable, and I worry every time I get in the vehicle that something will happen, and this is horrible feeling for a mother, whose job is to protect her children. I would also like to say that I feel very sorry for the individual dealerships, because they have all gone out of their way to try and fix these problems, but all have been unsuccessful. It is not the dealerships fault, it is the manufacturer of the vehicle. I truly believe as my kids have said that this vehicle is truly possessed, and in my opinion not fixable.