Brake Antilock Wheel Speed Sensor problems of the 2003 GMC Yukon

There is a recall #05068 that describes exactly what happens while driving my car. It occurs every time I drive my car, every time I accelerate and brake. (2003 GMC Yukon xl). However, GMC claims my car "isn't effected" and they refuse to fix it. My issues are 1. Getting dangerous, as the car bogs and won't accelerate without a period of hesitation and then it gives too much acceleration which can be bad if I'm on a slippery surface. Also, there is a common problem on these vehicles which is another problem I am experiencing: 2. My abs kicks in randomly, even if the pavement is totally dry and clear. Apparently, this is caused by a corroded mounting surface for the front wheel speed sensors. The corrosion builds up causing excessive gap between mounting surface and wheel speed sensor which causes a loss of wheel speed sensor signal. When the abs module sees the loss of signal it thinks the vehicle is sliding out of control so it will activate the traction control or abs. Description from recall #05068: certain pickup trucks and sport utility vehicles may experience unwanted antilock brake system (abs) activation. This condition is more likely to occur in environmentally corrosive areas. This recall will be launched in the "salt belt" states of connecticut, delaware, illinois, indiana, iowa, maryland, massachusetts, maine, michigan, minnesota, missouri, new hampshire, new jersey, new york, ohio, pennsylvania, rhode island, vermont. . . Hazard:this can cause increased stopping distances during low-speed brake applications, which could result in a crash.

Tl - the contact owns a 2003 GMC Yukon denali xl. The contact stated that while driving 10 mph, the abs engaged without any warnings. The vehicle was taken to an independent mechanic. The technician diagnosed that the speed sensor was defective and needed to be replaced. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure and current mileage was 176,000. Pm.

When driving at low speeds (less than 10 miles per hour) or starting from a stop, the traction control will automatically engage when the gas pedal is applied. When the traction control engages, a total loss of input to the engine results and the vehicle does not move (it essentially stalls). I was almost struck in an intersection while waiting to make a left turn on a green light in early December of 2011. I was stopped in the middle of the intersection waiting to turn left. When I attempted to turn left, I gave the gas pedal some input, the traction control engaged, and my vehicle stopped because there was no engine input and was almost hit by an on-coming car. Luckily, this had happened before and I knew to either floor the gas pedal or to let off the gas entirely and then floor it again to get the traction control to disengage and get power to the engine. Another related issue is the abs engaging for no reason. This also happens at low speeds (less than 10 mph). When the abs engages, the vehicle will travel another two to three feet prior to stopping. The abs issue resulted in my hitting a pole in a parking lot. It took several years to finally determine what the issue was and it turns out it was a result of front wheel speed sensor corrosion and an increased air gap between the wheel speed sensor and the reluctor ring due to rust and debris built up on the sensor mounting surface. Gm acknowledged this with a safety recall (#05068c: product safety) for some vehicle model years 1999-2002. This is a serious safety issue and gm fails to recognize that vehicles like mine (a 2003) and even later models have the same problem. What is even more frustrating is that the dealership could not properly diagnose the problem for several years because they could not "replicate the problem . " I would encourage the nhsta to investigate this issue.