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Truck AC/Heater Blower Working Intermittently

I have an 04 Chevy Silverado 5.3 and I'm having heater problems. I'm not getting any air hot or cold blowing out, but when I get on the highway a very small amount will blow out. Days will go by and then out of nowhere the blower well start to work and blow perfectly fine on all speeds for a day or so and then it will stop.

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By Andrew S. from Kansas

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February 7, 20140 found this helpful
Best Answer

This same thing was happening in my husband's jeep. It was the heater core that had to be replaced.

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Anonymous
December 4, 20150 found this helpful

The same thing is going on with my truck and it is not the blower and it is not the heater cord

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Anonymous
December 4, 20150 found this helpful

The same thing is going on with my truck and it is not the blower and it is not the heater cord

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February 10, 20140 found this helpful
Best Answer

Try having this done. Back flush the heater core. It cost me $100.00 to have. I had no heat at all.

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I am 79, coming on 80 years old and still learning about a car. I own a
1994 Ford Crown Vic named Louie and he takes me everywhere. Hope this helps! Mrs C.

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Anonymous
December 12, 20160 found this helpful

Undo the two hoses go to your heater take a air hose blow threw the right one

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March 10, 20170 found this helpful

My 2004 Silverado 5.3 engine I changed the heater resistor for the heater core I also noted that it was melted in the plug was melted so I changed the plug as well one wire at a time to make sure I did not make any mistakes when I was done the heater would still not turn on so I check the heater motor by hot-wiring it and the heater motor turns now I can't figure out where to go from here I took apart the heater controls clean the contacts put it back together hooked it up but I'm not getting any power from wherever to the contacts which I have no idea what to do with this if anyone has an idea please

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