I have replaced the battery and alternator. My door locks keep locking and unlocking on the own while driving, all my electrical in my car dim and keep resetting, my gauges are going all over the place. My car will turn itself off. While stopped at a red light, it seems to want to go on its own. While not running, I get in to leave, and my key at times don-??t want to turn over. Then at times I try to start it and it will tell me theft control and won-??t crank. When I-??m out of my vehicle at home, my car will lock itself when the setting is turned off. The problem has been going on for a year but only getting worse now.

- Timpson, TX, USA

I have a 2011 GMC Yukon, I recently learned from GMC that they have a known issue with these vehicles by where they shut off randomly when an rfid key tag in or around the vehicle interrupts the vehicles electronics. Our vehicle has turned itself off on multiple occasions which has created a huge safety concern for my family driving our Yukon. GMC discovered/reported this issue internally in June of 2015, and our dealership reluctantly provided me with a copy of the GMC bulletin (see attached). GM says they cannot fix the issue and will not repurchase our vehicle. GM says it is not a safety concern but will not put that in writing, their employee handbook does not permit them to put matters like this in writing as it can be used against them in the event of a catastrophic failure. I've contacted every level within GM, up to the executive office, in an attempt to resolve my issue and they have run me in circles and denied the know problem is a risk to the safety of my family. This messaging was reported down from the GM executive liaison, lawanda dean, from a man named rod (will not disclose his last name) who is the regional manager of GMC, over California. I'd like to know why this is not a recallable issue, why GM is allowed to not fix such an issue and if the NHTSA will assist me with this matter. Had GMC told me that my Yukon would randomly shut off we never would have purchased it.

- Valencia, CA, USA

2011 GMC Yukon. Consumer has attempted to get vehicle fixed. The consumer stated the safety issue is created when an unknown electrical problem in the vehicle results in the anti-theft fuse blowing thus causing the vehicle to stall while driving. When the vehicle stalls, the power steering is also disabled making the vehicle impossible to steer. The dealer indicated the cause was likely due to an electrical short but couldn't find the exact cause. The dealer recommended replacing the battery and ignition switch and adding some temporary bypass circuits.

- Bentonville, AR, USA

The rear defrost wires kept falling off of the window. I had them soldered back on several times until I finally had to replace the entire glass, because there wasn't enough material to be able to re-solder it. Within a couple of weeks of replacing the glass, one of the wires fell off. I had it fixed. Then a few weeks later the other one fell off. In total over the next year I had both wires re-soldered at least twice each, until just last week when I had to replace the glass again! I was told that this is a bad design by GM and that they tend to fall off because they get too hot when in use. However, the wires even fell off in the spring and summer when the defrost wasn't in use.

- Brainerd, MN, USA