Check engine, service 4x4, and other things flashing

[bigchevyz71]

My 06 duramax is flash everything it can including check engine, ABS, service 4x4 and is telling me if I'm in gear or not (I have to count down to drive) is this a ground wire problem or the cluster?

[Cosmic Charlie]

easy to try this ... and cost nothing

 

Your BCM controls your cluster & interior - yours may be mal functioning ...

 

try dis-connecting the battery for 30 minutes and hope for a re-boot / resetting it self ...

[wingman]

Next a thorough checkover with a Tech 2.

Lots of info.