Originally Posted by Blazeddiamonds

2008 Buick Enclave. Driving down road, all of a sudden car starts slowing down on it's own. Service Stabilitrac, Traction Control off, Service Engine Light blinking, occasionally the Reduced Engine Power would come on. Sometimes it would be okay if I stopped and killed engine for a few minutes. Kept on doing this Intermittently until it was continuous. Engine ran rough, sometimes it would jerk into another gear Driving down the road... hard shift outs. Replaced Throttle Body as that was what we were told that would fix it. No help. Changed spark plugs. Nope. Cleaned Mass Air Flow sensor.. NO. Cleaned various other sensors and hoses related to fuel.. nothing helped. 10 error codes were on. Cylinders 2,4,6 were affected by all of this. Autozone's computer said a timing chain would fix it. Im not that rich. So I sat down going thru forums and found out about a fault in the engine fuse box. One of the two 10mm bolts was loose. A little more research found GM had put out a service bulletin to their technicians. You can find it here, but read all the way to the bottom:
https://m.carcomplaints.com/news/202...problems.shtml
LONG story short, my son check my fuse box bolt and that was the problem. I don't know how to fully explain it but he said the bolt was over tightened to the point it was past the threads. So he backed the bolt out until the threads caught it. Instant fix! All codes vanished! Engine purring like a kitten. Only thing, light gray/almost white smoke poured out of the exhaust for a good 5 minutes after he fixed it. He's a diesel mechanic. Told me it was burning off all the carbon from cylinders 2, 4 and 6 not functioning correctly. It smelled like carbon burning where when I had cranked it earlier that day for the first time, you could see a tiny bit of exhaust and it smelled of gasoline. As the GM bulletin says, check those bolts on the fuse box BEFORE you do anything else! Might save you thousands of dollars and months of headaches. I certainly hope this helps someone. And please let us know if it fixes yours. It's great we can all troubleshoot together. Good luck!

Originally Posted by mikejjb

I changed the front strut assembly's and now the StabilTrac light sporatically comes on. No engine light on though. Not sure if it has anything to do with changing the struts or it's just coincidence. Thanks.

Originally Posted by lmasbury08

I have a 2007 Suburban and for the last few days it has been shifting extremely rough when I'm nearly at a complete stop and when I accelerate from a complete stop, so I'm assuming first and second gears. Transmission really seems to be thumping when this happens and I have a Stabilitrak off /Service traction control/Service Stabilitrak warning. Luckily it hasn't completely broken down on me yet and it just comes and goes randomly. Anyone have suggestions on what it may be? Seems to be a pretty common problem and haven't been able to find a clear solution in other forms. I've seen everything from it needs a new sensor to change the fuel pump. I'd hate to spend thousands of dollars diagnosing it!

Originally Posted by UrbanBurban06

2006 Suburban, just changed back brakes (pads and rotors). When starting the vehicle and pressing the brake pedal down to adjust the new brakes, service stability and service traction control lights came on as soon as the pedal touched the floor. Tech 2 showing no active codes and no history. Brake fluid sensor jumped with no change. Fluid level is topped up. Changed brake pedal sensor on the left side of the pedal with no change. Brake lights and cruise control work.