I have had my truck (06 lly) for nearly a year now with absolutely no problems. I have ppe programmer and 4 inch exhaust from turbo back and love spanking stuff on the road that leasts expects it. Saturday went to leave with it and it started and immediately stalled....again started and stalled...again and again. I reset to stock and still the same. Pulled fuel filter off and reinstalled. I even paid for gm mechanic on "just ask" to help but we came up with nothing. He tried resetting passlock theft thingy...wasn't it. Initially I had no codes but now I have been getting p0106, p0207, p0206, p0204, p0201. I know what the codes are just putting them out there. This truck sets inside most of the week as I drive a clunker back and forth to work. Ran fine last time I drove it which was week or 2 ago. Buddy thinks may have had a mouse short something out. The truck has been at the dealer now for day and 1/2 and they are dumbfounded. Any help from the real experts would be greatly appreciated. Sorry for the length.

Hows your fuel pressure?

ppe programmer was not monitoring because it wont stay running long enough. Did have a figue of 29000 something at one point....????

Already checked fuel pressure relief valve as well

A lot of guys on here with 06' having problems with the plastic WIF separator at the bottom of the fuel filter - if all else fails buy a new one (redesigned by GM) for about $80 and see if it helps - I had the same symtoms and mine was not tightened enough - tightened it up and fixed the problem immediately - just my 2 cents

Dealer just called and said mice had made themselves at home under main fuse box under hood and turned the wires into a mess. He stated they had a nest built and several dead mice in nest. Guess this gives me an excuse to drive her more. Any suggestions for keeping mice out! Thanks for the replies and views.

My fuse box is sealed tight, no chance for mice to get in. How big is that hole in your fuse box?

Or do mice in your area have thumbs? LOL

UNDER the fuse box...where all the wires come into the box. Believe me there is space...I could get my fingers up in it when I was looking. Not where the lid is..of course that is sealed. Amazing though isn't it?