Question about 2002 Chevrolet S-10
The Number 1 issue with no heat, is AIR. Air can get trapped in the heater core resulting in no heat. when Cold, open the system and run it at a high idle... about 1500rpms, driving it a short distance will also work, with the cap loose so it can burp any air trapped, then top off the coolant. A pint low is all it takes.
Posted on Jul 21, 2009
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Posted on Jan 02, 2017
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