Question about 2004 GMC Envoy
You only have one heater core and its located up front. If you smell it in the back its all the same vent system.
Heater cores are usually less than 50 bucks but the cost to install varies depending on who does it. Best bet is it call for an estimate,
No recall on this issue
Posted on Dec 10, 2009
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Posted on Jan 02, 2017
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