DTC P1101 Hummer
Calibration Mismatch
Calibration Mismatch
Description
The ignition switch is in the ON position. Ignition voltage is greater than 9 volts.
Cause and Solution
The CCM receives an invalid message from ECM, EBCM, modules over GMLAN which causes the CCM to deactivate.
Video Guide
Diagnostic Info
- DTC Code: P1101
- Brand: Hummer