Have an Endura RV with a 2004 GM Kodiak /Duramax 6600. Can't find any reference to a VSS location. Any help?

I would try at the cluster first. Pin A4, green/white stripe.

or

ECM MODULE NEAR DRIVERS SIDE OF FIREWALL(under hood), Clear plug, Pin 50

Thanks, found the Green/Wht behind the IC at A4 and hooked it up. I'll post the results after I get the whole Monte back together. Appreciate the quick help!