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12-14-2008, 12:24 PM
| #1 |
| Full Member Join Date: Nov 2008 Location: CA
Posts: 16
 | Cold Heat? When I have the heater on in my truck, the heat gets cold when I'm at an idle.... but when I am moving it is hot again.... any ideas? it is a 00 GMC Sierra 1500 2wd 4.3 thanks
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12-14-2008, 12:58 PM
| #2 |
| Senior Member  Join Date: Mar 2008 Location: N.Y.
Posts: 4,300
 | Do the hoses going to the heater cool off at idle? how is the coolant level?
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12-14-2008, 01:04 PM
| #3 |
| Full Member Join Date: Nov 2008 Location: CA
Posts: 16
| I will have to feel them and get back to you... the coolant looks to be just right.... if they did cool off, what could the problem be?
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12-14-2008, 01:23 PM
| #4 |
| Senior Member  Join Date: Oct 2005 Location: Birmingham, AL
Posts: 649
| Could be poor coolant flow, when was the t-stat changed last and how old is the water pump, could also just need the heater core flushed. |
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12-14-2008, 01:46 PM
| #5 |
| Full Member Join Date: Nov 2008 Location: CA
Posts: 16
| I just bought the truck, so I have no idea... it has 150k on it....
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12-14-2008, 01:52 PM
| #6 |
| Senior Member Join Date: Oct 2005 Location: Birmingham, AL
Posts: 649
| I would replace the t-stat and do a complete flush 1st. The water pump would be the last option. What is your temp gauge reding? |
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12-14-2008, 02:03 PM
| #7 |
| Senior Member Join Date: Mar 2008 Location: N.Y.
Posts: 4,300
| If the heater hoses are cool and radiator hot its a core problem. if all is cool then, go with kennys idea of changing the thermostat. By the way why do you need heat in sunny california?
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12-14-2008, 02:49 PM
| #8 | |
| Full Member Join Date: Nov 2008 Location: CA
Posts: 16
| Quote:
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12-14-2008, 03:29 PM
| #9 |
| Senior Member Join Date: Oct 2005 Location: Birmingham, AL
Posts: 649
| If its 55 here I'm driving with the windows down! |
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12-24-2008, 01:36 PM
| #10 |
| Full Member Join Date: Nov 2008 Location: CA
Posts: 16
| well that worked! thanks a lot!
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