Question about 2005 Chevrolet Silverado

2 Answers

My fan blower will not work on high speed on my chevy 2005 silverado

Have speeds 1 thru 5, all work but number 5, on fan switch

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2 Answers

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  • Chevrolet Master
  • 3,103 Answers

This setting pulls the most amperage on the circuit..and may have fried the switch contacts..the other settings use a resistor block to slow the motor down hence less amperage.. check the switch with a tester for continuity(take it out and check seperately) see if high works or not..if so equipted, may be relay assisted also..

Posted on Jan 19, 2013

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  • Expert
  • 47 Answers

If you got heat on all speeds and the blower motor is working properly then you probably need a new HVAC switch.

Posted on Jan 19, 2013

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Posted on Jan 02, 2017

  • 3 Answers

SOURCE: a/c heater climat control switch

Check the relais module located inside under the rh side of the heather box you can see the connector most of them need to be replaced as they burn out you may need to replace the blower motor as well,high amp draw caused by faulty bearings will overload the blower motor controller

Posted on Feb 15, 2009

  • 85 Answers

SOURCE: fan control switch

the blower resistor and pigtail will need to be replaced. good luck ive seen this problem a lot of times mr gm ha ha

Posted on Nov 23, 2008

MNfisherman
  • 11896 Answers

SOURCE: blower fan only works on high

If it is working at all then the relay and fuse is good and the problem is either the little vacuum hose on the back of the control switch panel or the panel itself.

Posted on Feb 01, 2009

  • 11 Answers

SOURCE: Heater/ac switch speeds 1 and 2 don not work in 99 Silverado

you need a resister found under your air duct by the passenger floor under dash board auto zone sells these for about 25.00 you may as well buy cabin air filters while your at it . 1 of the screws will be a pain to install back into the duct work I left mine out didn,t make a difference . you might have to order it as they are a comman item oh you will need a vacuum to clean up mess from cabin air filters .this is not a hard job .

Posted on Feb 28, 2009

  • 104 Answers

SOURCE: 2003 Chevy Avalanche fan blower only works on high

needs blower control module

Posted on Sep 08, 2009

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