THROWS P1516 CODE AND PUTS TRUCK INTO REDUCED ENGINGE POWER.
2003 Chevrolet Tahoe
May, 12, 2012 AT 4:09 AM
I have replaced the app sensor. I have replaced the tac. I have cleaned and replaced all grounds on the engine. I have thoroughly checked all wires and connections on the app and tac. Cleaned and tightened all battery connections. Dont know where to turn or what to try next.