2006 Chevrolet Silverado 2500 HD Q&A
2006 Chevrolet Silverado 2500 HD Question: What part controls dash lights, Speedometer, and gauge lights?
Many times it is the dash cluster is the fault..but not sure in your case. Symtom of a bad dash cluster is it stops working altogether not only when start engine. You may want to have battery tested first. Low voltage when cranking engine can cause weird faults in any modules in the truck. Computers go nuts if voltage drops below 8 volts...this could happen when starter is pulling voltage down with a weak battery. - milesauto