Efi Live

[rsaint]

have a 05 Gmc duramax with 40hp tune, need it back to stock and cannot find my autocal, is there any other way to remove tune. The guy that did it is living in
Mexico now. Also truck is not drivable p0202,p1094 and p2149 codes.

 

[new_nytro]

p1094

#2 injector harness would be my guess. It happened on mine too. There is a kit with new harness and a brace so the harness doesn’t vibrate as much. Easy fix but the kit from GM was $500 when I got mine. Probly not tune related. You can do ice pick fix on existing harness as a temporary solution but from what I understand it will do it again.

 

[ABMax24]

Dealer can flash it back to stock, but that will vin lock your autocal if you do find it again.

 

[Cableguy]

find a wrecked truck and get replacement ecm

 

[rsaint]

Ya dealer wanted it stock in case any problems occurred
Getting them just to diagnose it and possibly put new injector ends on 2-7