Fun with codes!

[sonix13]

Couple days ago while driving the stabiltrak light started flashing and my speedo was jumping around as well as my RPM. The gas and millage info went blank. Brought it in to the dealer to be told they couldn't find anything. Since I got it back I've temporarily lost AC twice while driving, one the car wouldn't go into reverse or shift our of 1st gear while driving (auto). Lost power steering while driving more times than I can count by this point.

U0100
U0073
U0109
U0121

 

[Natesriv]

sounds like a PCM communication failure. Your plugs all pushed in their sockets tight?

 

[sonix13]

sounds like a PCM communication failure. Your plugs all pushed in their sockets tight?

I did think of that originally, it was like dark by the time I got off of work and has been every day since. I plan to pop the covers and double check everything it nice and tight. I plan to do the same thing with the fuse panel as I can't think of anywhere else all of those components would be connected.