Actions Taken When the DTC Sets
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.
C11B2 4B
- Transfer Case Clutch Torque - Maximum
- Shifting = Enabled
- Driver Information Display = Service 4WD
C11B2 54
- 4WD High/Locked = Transfer Case Clutch Torque - Disabled
- 4WD Low = Transfer Case Clutch Torque - Reduced
- Front Axle = Disengaged
- Driver Information Display = Service 4WD
C11B2 58
- Shifting = Enabled
- Transfer Case Clutch Torque - Reduced
- Driver Information Display = Service 4WD
C11B2 F3
- Shifting = Disabled
- Front Axle = Disengaged
- Driver Information Display = Service 4WD
C11B2 F4
- Transfer Case Clutch Torque - Reduced/Disabled
- Driver Information Display = Service 4WD