Ignition problems of the 2003 GMC Yukon

When traveling at any rate of speed, the reduce engine power light comes on at I lose all power. I must try and pull over at a safe place, stop the car, turn off ignition and wait 10-15 second before starting and just hope it will return to normal mode. This can happen many times in one day and then it may not happen at all for long periods of time. Very dangerous! I have been driving 70 mph and had to immediately try and pull over out of speeding traffic, onto a shoulder and stop my car with my children.

2003 GMC Yukon xl complaint #1. Speedometer is erratic. Odometer reads only 79,000 miles. A few months ago, after starting the vehicle the speedometer jumped to 60 mph which caused the needle to read 120 at the actual 60. If you shut off the ignition and restarted the car, the needle would drop about 5 mph each time. If you repeated this procedure (starting engine, shutting off engine) after 10-12 times the speedometer would read zero again. This happened several times. Yesterday as I pulled off the highway, where the speed is 75 mph, and pulled onto our local road where the posted speed limit is 50, I noticed that I was holding up traffic although the speedometer read 50. I felt as if I was not actually doing 50 so I sped up even though the needle read 65mph. I pulled over to see if indeed the speedometer was reading inaccurately, and it was. This time stuck at 15 mph. I again repeated the engine off/on procedure to get the needle back to zero, but noticed it jumping and not responding quickly at stop signs. I have read reviews about complaints with the speedometers but do not see Yukon xls as part of the affected vehicles. This is a very frightening issue as I have a 16-year-old that will be driving this vehicle on her own in just a few months. I believe gm should address this before someone's driving record is tarnished for unintentional speeding resulting in tickets and insurance increases. . . And possibly even accidents resulting in death. Complaint #2. Fuel gauge sticks at full mark until approximately 1/4 tank of gas is used, then gauge will drop. Also sticks at 1/4 tank then drops again to empty. Due to inability to prove the problem at the dealership while under warranty, the dealership would not repair.

The contact owns a 2003 GMC Yukon xl. The ignition key has three different setting auxiliary, run, start and the vehicle has a stop mechanism so that owner cannot take the vehicle out of park unless stepping on the brake. However, that stop setting did not work if the key was set to the auxiliary. Could basically take it out of park and put it into gear without having to step on the brake. Unable to do it if the key was set on the run position or if started vehicle. Owner's manual did not say anything about it, and it did not talk discuss the safety of the way this vehicle was made. What happened is he had a 2 year old and a 5 year old child while backing car into driveway. Is on a slant they were just sitting there they had the vehicle on accelerate and when he turned around 2 year old crawled into the front of the vehicle, causing the vehicle to go down the driveway and across the street. The doors were locked to the vehicle he had to jump through the window and hit the brake. And he has read the owners manual from front to back and he cannot see anywhere in there to were it is possible to wear you can take the vehicle out of the park setting without hitting the brake. He called the dealership and they told him that this would not happen in the vehicle. He knows several people that has this same type of vehicle with this same mechanism and there vehicle is the same way.