New guy here. Great site! I have '97 C3500 6.5 in great shape with only 80K miles that I just bought. The only things not functioning are the hazard switch and cruise control switch ( the cruise indicator light does not come on in the dash). Would you lean towers the multifunction switch? How do you diagnose?

Thanks!

 

http://www.dslreports.com/forum/r195...topped-working

Sometimes a symptom of a bad PMD is loss of cruise as well.

 

Thanks! I will check it out tonight and post what I find.

 

Scan the truck for cides. Any codes, and the cruise will not work. Even stored codes. So the CEL light may not be on but if a code is stored it will not work.

 

Thanks guys. It was a bad switch