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tucsonjwt · 01-22-2013, 05:47 PM

Go with copper. You can order AC Delco or GM OEM online at cheap prices and free shipping.
Make sure you have the correct thermostat in your truck and that it is opening, not stuck shut.

01-22-2013, 05:47 PM	#15
tucsonjwt Registered User Join Date: Jul 2007 Location: Tucson, AZ Posts: 3,188	Re: Heater Core Probs... Again!! Go with copper. You can order AC Delco or GM OEM online at cheap prices and free shipping. Make sure you have the correct thermostat in your truck and that it is opening, not stuck shut.