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C10 - C90 Bill · 01-26-2015, 09:40 AM

The "Red Button" is the Factory one. The Turn Signal that you have described sounds like an aftermarket one and the built-in 4-Way probably just came along with it.

Bill

01-26-2015, 09:40 AM	#32
C10 - C90 Bill Registered User Join Date: Nov 2001 Location: Moneta, VA USA Posts: 3,067	Re: GMC 4000...? or 5000 series....Pictures...it's about time... The "Red Button" is the Factory one. The Turn Signal that you have described sounds like an aftermarket one and the built-in 4-Way probably just came along with it. Bill __________________ '60-'72 Chev/GMC Fan GMC 9500 Fan Detroit Diesel Fan