Conditions for Setting the DTC
WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
C11A9
Control module K69 detects: Transfer Case Clutch Identifier Status = Not Programmed/Invalid
The valid production transfer case clutch calibration identification is on the transfer case tag or can be retrieved from the transfer case control module data.
The valid service transfer case clutch calibration identification value is IKH.