http://freeautomechanic.com/mechanic/forum/2010/03/2003-chevy-blazer Auto Repair Questions and Answers - Auto Repair Help - Ask A Question - Freeautomechanic.com Mon, 06 Feb 2012 13:03:43 +0000 hourly 1 http://wordpress.org/?v=3.0.1 http://freeautomechanic.com/mechanic/forum/2010/03/2003-chevy-blazer/comment-page-1#comment-363 Jaxer Sun, 21 Mar 2010 04:04:58 +0000 http://freeautomechanic.com/mechanic/forum/2010/03/2003-chevy-blazer/#comment-363 Yes, it could be the heater core. Check your coolant level and if it is low, then this would be a good indicator. If the coolant level is not low, then you may just have a clogged drain. Yes, it could be the heater core. Check your coolant level and if it is low, then this would be a good indicator. If the coolant level is not low, then you may just have a clogged drain.

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