Re: Removing all HVAC from 1972 GMC?
Take it all out to include the inside heater case. If you want to block off the heater core/ac you will need to make a plate for the box and one for the heater motor. I do this for the ones I remove. Pretty simple. Get a coffee can lid that fits the circle and trace it out, drill a hole and I use a piece of metal that goes inside the heater motor area and weld a nut to it. Then it secures to itself with a bolt. If you want to put the heater controls back in, no issue, just remove the cables and put it back. I can take a pic if you want.
Smitty
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