HOW DO I CHANGE MY HEATER CORE IN MY TRAILBLAZER AND WHAT DO I HAVE TO TAKE APART TO DO IT
Nov 16, 2010 at 12:16 AM
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BMRFIXIT
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19,053 POSTS
what year is it ?
Nov 16, 2010 at 12:19 AM
HMAC300
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48,601 POSTS
this is a big job, you have to pull the ip blow the a/c charge and take teh hvac unit out, replacethe heater core and reinstall everything including evacuate and recharge your a/c system.