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73-87 Chevy _ GMC Trucks => Interior & Equipment => Heating, Ventilation & Air Conditioning (HVAC) => Topic started by: 73c10Shorty on October 16, 2013, 10:36:23 am

Title: Heater control w/ac for a '73
Post by: 73c10Shorty on October 16, 2013, 10:36:23 am

Does anyone know if a heater control unit for a 74/75 will work in my 73?

I couldn't find one on this site but here's a link to the one I found.
http://www.brotherstrucks.com/prodinfo.asp?number=HCA75AC

Title: Re: Heater control w/ac for a '73
Post by: Jason S on October 17, 2013, 07:39:37 pm

To the best of my knowledge, the Factory Air control panel for '73-'75 trucks were the same.

Is your control panel completely missing? 

Title: Re: Heater control w/ac for a '73
Post by: 73c10Shorty on October 17, 2013, 09:25:36 pm

I steal have the original control unit in there. It works, but it's extremely hard to adjust. Very sticky.

Title: Re: Heater control w/ac for a '73
Post by: bd on October 17, 2013, 10:04:00 pm

Have you tried lubricating the control head with a little lithium grease and spraying the cables with some Tri-Flow or WD-40?

Title: Re: Heater control w/ac for a '73
Post by: 73c10Shorty on October 17, 2013, 10:24:02 pm

I have not. That sounds a lot cheaper than a new control unit!

Title: Re: Heater control w/ac for a '73
Post by: bake74 on October 18, 2013, 10:42:16 am

Quote from: bd on October 17, 2013, 10:04:00 pm

Have you tried lubricating the control head with a little lithium grease and spraying the cables with some Tri-Flow or WD-40?

     It is a little bit of work to do, but most always you can get them "un-stuck" as BD said, I found that if you take the time to take it apart and clean it right it works like new.