Question about 2004 Chevrolet Silverado

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2004 Chevrolet Silverado 2500

The heat and a/c doesn't always work. It is intermittent. What could be the problem?

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Blower motor resister

Posted on Dec 15, 2008

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No heat


If it had dexcool orange coolant in it, the heater core is probably plugged, pull off the hoses and blow air through it, the dexcool breaks down and clogs everything. I had this problem a month ago and the core was plugged badly. Hope this helps

Dec 30, 2009 | 1999 Chevrolet Silverado 2500

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The air conditioning on my 2004 Chevrolet silverado 2500 hd diesel quits working and begins blowing hot air.


After checking the fuses and the relay, I would suggest that you pick up a charging kit for about 25-30 bucks at your nearest dept. store or auto parts store.

Sep 07, 2009 | 2004 Chevrolet Silverado 2500HD

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Intermittant hot/cold air from heater


Had the same problem with my Mazda6 awhile back. Took it to the dealer and they found the radiator wasn't holding pressure. They replaced the whole radiator under warranty (WHEW!). Not sure how to check for that kind of thing, but it's a start.

Jan 01, 2009 | 2004 Chevrolet Silverado 1500 Crew Cab

1 Answer

A/C and Heat Driver Side Intermittent Problem


You will need to replace your driver side temp actuator. It is most likely sticking or over travelling. It is located under the dash directly below the a/c control head. It is bolted to the a/c box upside down with two small bolts. Let me know if i can help more.

Dec 15, 2008 | 2004 Chevrolet Silverado

2 Answers

2004 Chevrolet Silverado 2500 HD heated seats


pull the fuse for seat heater inside dash pael on drivers side

Oct 22, 2008 | 2004 Chevrolet Silverado 2500HD

1 Answer

AC Blows cold then hot


I had this happend to me on my 2004 2500 in july in S.C.I turned the key off and on 5-6 times and i have not had that problem again.

Aug 13, 2008 | 2004 Chevrolet Silverado 2500 Crew Cab

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