NEED HELP- HVAC control differences- NO AC - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**crossy** · 02-06-2025, 05:07 PM

I got lucky enough to find some parts already off for the 72 I am working on, but i found that there are two distinctively different Heater controls for NON A/C equipped trucks. what determines what you HAD. I say HAD because mine had NONE at all in when I bought it. I see TWO cables and an electrical connector that looks too short to make it to a left side (vertical) fan speed switch.
So I guess this one takes the THREE slide controls and one of those slides has an electrical connection?? BUT it also looks like a cable is missing from underside of the heater box?? thanks, Crossy

02-06-2025, 05:07 PM	#1
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,042	NEED HELP- HVAC control differences- NO AC I got lucky enough to find some parts already off for the 72 I am working on, but i found that there are two distinctively different Heater controls for NON A/C equipped trucks. what determines what you HAD. I say HAD because mine had NONE at all in when I bought it. I see TWO cables and an electrical connector that looks too short to make it to a left side (vertical) fan speed switch. So I guess this one takes the THREE slide controls and one of those slides has an electrical connection?? BUT it also looks like a cable is missing from underside of the heater box?? thanks, Crossy Attached Images __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww 84,C10 SWB-Yella,stock 86 K10 SWB-Red, hopped up 305,4/S LOTS of Cummins trucks. Last edited by crossy; 02-06-2025 at 06:14 PM.



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