Lifted 07 Yukon with hard shifts, and Stabilitrack/traction control issues

[iRIDElow]

So about 2 yrs ago I lifted my 07 Yukon with a 7" FTS kit on 35s. Never had an issue at all until now. I was headed home when the truck started dinging at me, the dash kept flashing traction control off and then it would go away. A minute or so later it comes back on and goes off. After a few times of doing that it starts flashing stabilitrack off and it does the same thing it goes away and then pops back up. Well while all this is happening I start pulling into my neighborhood and leaving a stop sign coming out of first gear it starts shifting hard into the next gear. Can any one help she'd some light on this? I very rarely drive the truck it sits at home most of the time since me and my wife car pool to work but I need to get it fixed. It's an 07 with 58,000 miles if that tells you little it gets driven. Also does the stabilitrack and traction control have anything to do with he hard shifting?

---------- Post added at 05:05 PM ---------- Previous post was at 04:26 PM ----------

Also there was a loss of power from a stop sign wouldn't get above 1000 rpms then I coasted a bit and let off the gas and after a few seconds I gave it gas and had power again

 

[iRIDElow]

Well I went and had the check engine code ran and it was for the passenger side o2 sensor. While I was replacing that I noticed the MAF sensor was loose at the quick disconnect plug so I tightened that up and I took it for a small test drive... And all the problems have disappeared. I'm not sure if any one that was the cause of the issue but I will just keep an eye on it and if it comes back try and pin point the issue at that time. I have thrown away any help from GM because the lack of support and standing behind their product. I am one of the people they turned away and dismissed the cracked dash problems on the Tahoe/yukons. GM is aware of the problems these trucks have since they are consistent with nearly all of them and they turn their back and let paying customers fend for themselves. Sucks since I have only owned Chevys but after this truck I will never purchase another truck from them and dealer help / GM customer support to get legitimate problems fixed its about worthless anymore. I have filed complaints with NHTSA and have been in talks with a few of my local news groups for the cracked dashes and they are actually very interested in these issues since such a big name corporation is turning their backs on customers. To anyone else I suggest filing complaints and help getting these issues fixed for legitimate problems.

If the problems come back I'll update this thread then