I am the owner of a 2003 GMC Envoy slt, 2wd, and I have had my vehicle into the dealership three times for a problem which I consider an extreme safety hazard. My vehicle has now failed for a 4th time and the dealer refuses to admit that they cannot fix the problem. My vehicle loses power as I am accelerating on to highways and I have almost been hit by trucks on two separate occasions pulling out on to a highway as I am unable to go over about 10 mph and have to pull off the roadway. The vehicle was in for a third time for that same problem back in January. The dealer had it for a week and put over 400 miles on my vehicle to find out what was causing the problem. The same problem is happening again, 6 times in 3 days, and the service manager will not admit its the same problem since so much time has elapsed. After I lose power, my "reduced engine power" and my "service engine soon" lights come on. I must pull over and turn my engine completely off and then back on again. The "reduced engine power" light goes out but the "service engine soon" light remains on. The first two times the dealer had the vehicle I do not believe they replaced any parts as they felt it was a computer problem. The third time they had the vehicle they did replace some part, but it was never fully explained to me what they replaced. Since this is a safety hazard to me and my family, I feel that this problem should be reported to you in case I am involved in an accident and injuries do occur, I want it on record that this problem is occurring with this vehicle. **please note that the incident date I have entered was the last date it has occurred, I just started keeping a log since it started happening again**

- Oakdale, CA, USA