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Old 09-23-2021, 08:47 PM   #20
wazzabie
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Join Date: Dec 2011
Location: WA
Posts: 367
Re: Cold Climate Package - special heater

Quote:
Originally Posted by farmall View Post
I wish you would take some pics of the floor plenum and firewall blower motor area.

Is your switch a 4 position switch?

I have an 81-82 Diesel parts truck with a full firewall insulation in the engine compartment. It has no glove box door so no codes. Im guessing the insulation is to keep the clatter out but it should keep the heat in the cab as well, I would think.

The L&R sides of the windshield on my 81 K30 will freeze into a thick icy mess if I have the defroster on while it is snowing and going down the road. The only way to be able to drive is to keep the windshield cold. I am switching to an AC cab but I want to be able to fry bacon in there.
Yes - I have the 4 position fan switch and I know this is the switch that came with the cold climate package. Also I have insulation inside on the firewall.

Is the 4 position fan switch only on the cold climate packages?
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