Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hi Im David, the ignition switch is what would be sending it. There are 2 ignition 1 voltage circuits supplied to the Engine Control Module (ECM). The first ignition circuit is provided by the powertrain relay, through a fuse. This ignition 1 voltage circuit supplies power to all the internal ECM circuits associated with the throttle actuator control (TAC) operation. The second ignition 1 voltage circuit is supplied by the run/crank relay through a fuse, and is used to power the remaining internal ECM circuits. If the ECM detects a voltage difference between the 2 ignition 1 voltage circuits, DTC P1682 will set.l
first of all what year, model and engine ?
never mind. 2007 uplander.
heres a table to start the diagnosis
sure. right here
do you still need assistance?
just checking in to see how its going