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no heat in my 97 deville


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hello my dad owns a 97 deville just got it yesterday and it's not blowing heat please help i'm new to this.

Is the fan blowing air at all? Meaning is the fan working?

Or, is it blowing cold air?

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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