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toolboxchev · 07-11-2020, 12:02 AM

If it is blowing that cold I would venture to say its there to prevent the unit from freezing up.

Common sense, SWAG, or corrected error on part of GM.

07-11-2020, 12:02 AM	#3
toolboxchev Registered User Join Date: Jul 2015 Location: 2nd left past the stump on a dirt road. Posts: 2,629	Re: Opening under dash If it is blowing that cold I would venture to say its there to prevent the unit from freezing up. Common sense, SWAG, or corrected error on part of GM.