changing heater core on 1990 Chevrolet Suburban 1500

I need to know how to take the heator core out i cant find the screws that hold the air duck under the dash board so i can get to the heater core

by in Houston, TX on January 13, 2011
1 answer
ANSWER by on January 13, 2011
its under the hood on older models with a/c.
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