Conditions for Setting the DTC

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTC B0078 will set when one of the following conditions occur:
- A valid ID message is not received within 5 seconds of the SIS being powered up.
- Status message is not received.
- The SDM has failed twice to reset the SIS.
DTC B0081 will set when one of the following conditions occur:
- The SDM has received an ID message from the SIS which does not match the ID stored in the SDM memory.
- When 2 SIS resets are attempted without the correct identification being detected by the SDM.
DTC B0082 will set when the SDM has received a NOK (Not OK) message from the SIS.