I recently had my vehicle in my service dept. For an on-going problem of which heritage GMC could not repair. From a standstill, when I would accelerate, the vehicle would lose power and not move after about 20 feet or so and a "traction active" message would appear on the display. This was a very serious safety concern as the vehicle would end up in the middle of the road with loss of power and cars behind me will almost re end my car. It is an intermittent happening 6 or more time daily, would happen when I would drive from a stop sign or red light. To regain power, you had to let off on the gas peddle and the drive would re-engage. We have been dealing with this for a while and all the GM vehicles run this type of sensor combo on all the wheels telling the computer when to apply brakes or power to the wheels, these get dirty from road salt in upper states and GM will only address 2002 cars, but the 2002-2005 look all alike, this also applies to regular cars, after doing a search there are alot of people having my same problem, this is as safety hazard and is going to cause a fatality.......

- East Peoria, IL, USA

Traction active appears on display - while stopped at a very dangerous intersection, I pressed the accelerator only to have the traction active light appear on the display and the vehicle would not move. I had to let off the gas and then press it again in order for the vehicle to move. This is a major safety concern as I am unable to accelerate at an appropriate speed in order to avoid an accident while taking off from a stop.

- Westminster, MA, USA