P1682 GMC - Ignition 1 Switch Circuit 2
Repair Importance Level:
Repair Difficulty Level:
- Faulty ignition switch
- Ignition Switch harness is open or shorted
- Ignition Switch circuit poor electrical connection
- Faulty Engine Control Module (ECM)
When is the code detected?
The ECM has detected a voltage deifference between two circuits
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible no crank or start
P1682 GMC Description
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.
Need more help?
Do you need more help with the P1682 GMC code? ask a question to our users or search the top hand picked automotive forums for more information
GMC Technical Service Bulletins for P1682 code
2007 GMC SIERRA 3500 Fuel System, Gasoline:storage:tank Assembly Details
2007 GMC SIERRA 3500 Fuel System, Gasoline:storage:tank Assembly:mounting Details
2007 GMC SIERRA 3500 Fuel System, Other:storage:tank Assembly Details
2007 GMC SIERRA 3500 Fuel System, Other:storage:tank Assembly:filling/charging Details
2007 GMC SIERRA 3500 Fuel System, Other:storage:tank Assembly:mounting Details
Repair Shops Around Your Area
Need parts to fix this code? Search hundreds of stores at the same time and compare prices
Help us improve Engine-Codes.com. Leave a comment below or tell us if the information above help you fix the code. What are symptoms is your vehicle for the P1682 GMC code? Have you replaced any parts?
Any information is appreciated. Thanks