Brake Sensor problems of the 2002 Chevrolet Impala

The car ignition suddenly shut off and the power steering and brakes failed on a steep grade. (the ignition recall had previously been performed on the vehicle, and the key fob had been reworked so it shouldn't have been a ignition issue). The transmission was shifted into neutral and the car restarted (while still coasting down the hill) to regain control,this was repeated numerous times until a safe place to pull off was reached. This grade was extremely steep, the road had switchbacks , cliffs,and no guardrail, it was a miracle no one was injured or killed. This same vehicle had just had a duplicate problem and was repaired at the dealership in July, less that 1000 miles prior to this current event. The dealer in July replaced the mas sensor and the battery as they said the mas was corroded and needed to be replaced. This current event was caused by the map sensor and the main computer according to the dealer.

Bought vehicle in April, 2002. We have had repeated malfunctions of the traction control system. I have uploaded a few of the repair documents we had collected over the years. I have several more. Despite numerous repairs, from wheel sensors, to wiring (including complete harness), computer chips, resets, etc. Every attempt by chevy to fix this poorly designed system have failed. Chevy has admitted they don't know what to do. Their best suggestion is to try yet another dealership. I am tired of wasting my money on a poorly designed and installed safety feature. The system has failed on start up, driving at highway speeds, low speeds, while braking, etc. I have contacted gm corporate twice. Once they replaced the wiring harness only to have it fail shortly after. My second contact is in progress. My online searches of this year and model have revealed many such complaints on this model and similar models. The story is the same: gm can't fix the problem. We live in snow country, and traction control is important to us. Currently the system has been out of service for over two years. If you investigate this issue on this year and model, you will find this is a common problem that gm has not recalled. Please investigate. Thank you.

We bought this 2002 Chevrolet Impala in April of 2002. Fortunately, we purchased the extended warranty. We have had continuous problems with the traction control system. Initially, the warranty covered the malfunctions: wheel sensors, modules, brake pump, wiring, etc. Were replaced. Shortly after each repair, the system failed again. When the warranty expired we continued to experience system malfunctions, replacing part after part. To date, over $3. 5k has been spent to attempt to fix this poorly designed and installed system. It has been out of service for more years, than it has functioned. It has been out for the last 3 years, because we can not put good money after bad. I recently contacted gm corporate with my complaint and they told me to take it in for system diagnosis. Same result: brake pump and module out, with possible wiring problems and wheel sensors. Estimate to try to fix: $2. 5k. No gurantee it will work. This malfunction occurs with no warning: sometimes upon starting the vehicle, while driving or turning. I investigated this problem online and found many others have experienced similar problems, not being able to get them fixed properly. It occurs in Impalas and monte carlos of similar years, 2002-2008. How can gm justify spending $6k to maintain a single system which works directly with the abs brake system? my contact at gm is danielle 855. 880. 1500 ext. 5921509. Chevrolet needs to do a recall on this faulty, poorly engineered system. Please investigate. Thank you. (I have attached just a few of the many invoices I have collected over the years for your inspection. ).