Double D racing Posted February 4, 2011 Report Share Posted February 4, 2011 (edited) this is for a buddy of mine,he has a 2000 gmc truck, v-8 80000 miles on it,heater will not get hot.both heater hoses are hot going to and from firewall but no heat.could it be the thermostat switch on the dash??? Edited February 4, 2011 by Double D racing Quote Link to comment Share on other sites More sharing options...
MrX Posted February 4, 2011 Report Share Posted February 4, 2011 The first thing you need to Ck. is the heater core it may be pluged. Pull heater hoses off run air or water to if it flows. Need to know if it is auto air or manuel air. Auto air has a air temperature actuator you have to pull the dash to replace it. The manule has a cable by the gas pedal. hope this helps. Quote Link to comment Share on other sites More sharing options...
JamesHigdon Posted February 10, 2011 Report Share Posted February 10, 2011 The doors in that heater system should be computer monitored, a good scan tool that can tap into the BCM should lead you to the problem. Quote Link to comment Share on other sites More sharing options...
Double D racing Posted February 11, 2011 Author Report Share Posted February 11, 2011 thanks guys,i will pass on the info...i know hes been freezin his tail off!!! Quote Link to comment Share on other sites More sharing options...
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