I have removed the entire dash out of my Pickup & need to remove the heater duct to replace the heater core ,BUT I can not seem to locate the bolts/screws that fasten it to the firewall , Am I going to need to remove the passenger side fender to access some bolts through the firewall ? Also does the AC have to be compromised to do this ? How many bolts hold this duct & where is the approximate location of each . Everything is so compacted & well covered that they are not readily visible .Any help is MUCH appreciated - Thnx
Mounting Bols for heater duct on 1998 Chevrolet S10
by hitchpin5007 in Prescott, IA on January 15, 2010
ANSWER by patrick mannion , January 15, 2010
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ANSWER by SirNando , September 16, 2015
You have to drill through the casing to get to the bolts I believe there are 3. Go to YouTube and put in "2000 s-10 heater core removal" and you will see what I mean. I'm doing the exact same thing... what a bitch.