Circuit/System Description
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.
- This is an internal fault detection of the transfer case control module. No external circuits are involved.
- This DTC is set anytime the transfer case control module is replaced or reprogrammed.
- The Transfer Case Clutch Identifier Configuration/Reset function must be performed to clear this code.