Question about 2003 Pontiac Grand Am
You need to figure out what your heater thermostat valve looks like... locate it & replace it... (or figure out why it is not working).
Blend door/baffle... control solenoid.. whatever!!
At rock auto (below)...
Also check out BBB industries for your wiring diagrams...
BBB Industries Premium Alternators Starters Power Steering Products
Posted on May 25, 2016
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Posted on Jan 02, 2017
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