Question about Chevrolet Silverado 2500HD

2 Answers

Didnt work, replaced the fan motor and lower speeds pop my fuse. just put the relay on yesterday. parts swapping is eating my pocketbook apart

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  • gary clinton Feb 01, 2010

    replaced the resistor yesterday with new one. replaced the blower motor this morning. but still no solution. i think although the harness looks fine, there is alot of looseness in it and maybe that could cause the problem. im lost

  • gary clinton Feb 01, 2010

    replaced the resistor yesterday and the blower this morning. dont know where to start now, think the harness is next, although it isnt burnt, it is loose

  • gary clinton Feb 01, 2010

    replaced resistor yesterday, and blower today

  • gary clinton Feb 01, 2010

    i replaced fan, resistor, resistor wire plug conector. blower motor. dont know whats left. speed 5 ok, 4,3,2,1 pop the fusein a mili second. dead short somewhere i guess

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  • Chevrolet Master
  • 1,757 Answers

I assume we are talking about the Heating/AC Blower Motor Fan?
I wish you didn't buy the Blower Motor before asking me, it would have saved you the cost of the Blower Motor.
The Heater/AC Blower Motor System consist of the Switches, Relays, a (one (1) for each motor)) RESISTOR and a Blower Motor.
The System only working on High and popping fuses/relays on Lower speeds are direct indications that the Blower Motor Resistor is bad.
The Blower Motor Resistor is located near the Blower Motor and has 3 to 4 wires going into it. The wires from the Switches go to the Resistor then from the Resistor they go to the Blower Motor itself.
It is easily removed and replaced.
Let me know if this helped, or if you have additional information, questions, or problems. Contact me at FixYa.com!
Regards;
Pat

Posted on Feb 01, 2010

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  • Patrick Rayome Feb 01, 2010

    My apologies...

    I did not have access to your most recent comments.

    If all of these were replaced, then you have a short in the wiring.

    1. Check the Ground Connections.

    2. Check all the electrical connections, making sure the electrical plugs Male Ends have not been bent over; or the Female ends and wires coming out of the back are not shorting each other otu, causing the short.

  • Patrick Rayome Feb 02, 2010

    Follow-up question: How is it going with the repairs. You stated that the connections were loose. Was the Male ends bent? Let me know where you are at with this. No extra money, just reply in comments.

  • Patrick Rayome Feb 02, 2010

    I'm beginning to think that the real short is in the switch itself.

    Pull the switch/panel and check for any wires or noticeable burns in the areas of the switches.

    Contact a local Junk Yard or Auto Salvage to see if they have the same year, make, and model as yours..

    This would be the cheapest way to find a replacement.

    Let me know...

    Pat

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  • Master
  • 1,608 Answers

The common problem with the blower motor on these is the blower resistor module.It is by the blower motor and the wires from the resistor module plug into the blower motor.These resistors can cause a lot of problems.Sometimes they will keep the blower working even with the key off and out of the vehicle.If your going to swap parts don`t buy new ones.Go to your local salvage yard or junk yard and get used ones.They are a lot cheaper and if they don`t take care of the problem your not out a bundle.Hope this helps.Good luck and let me know if you need more help.

Posted on Feb 01, 2010

  • Salvador Quintanilla Feb 01, 2010

    If you send me the year of your vehicle I can look up service bulletins and electrical schematics for you and see if we can get this problem solved.Thanks.




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