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99 Sierra heater problems....

This is a discussion on 99 Sierra heater problems.... within the Technical / Maintenance forums, part of the General Discussion category; So I have a NBS 99 Sierra. The heater blower motor will only run on 5(high). I figured it was ...

  1. #1
    The One Smokedawg's Avatar
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    99 Sierra heater fan switch problems....


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    So I have a NBS 99 Sierra. The heater blower motor will only run on 5(high). I figured it was the heater fan switch so I went and bought a new heater switch/panel. Exact same problem. Is there a relay I should check? Any suggestions?

    Thanks!

    Derek
    Last edited by Smokedawg; 01-04-2010 at 10:19 AM.
    2008 GMC Sierra - 5.3L, 6" lift, 35" Nittos, K&N CAI, Rhino Liner

    1990 Mustang GT- 347 Stroker, Nitrous, full suspension and lots more

    1995 Chevy S-10 - 406 SBC, 400 Turbo, Dual tunnel ram, Dart 215 Pro1 heads, Nitrous, full tub, 9in rearend

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    Re: 99 Sierra heater problems....

    resistor gone bad.

  3. #3
    The One Smokedawg's Avatar
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    Re: 99 Sierra heater problems....

    Just picked up a new resistor..Will put it in shortly..Thanks!
    Last edited by Smokedawg; 01-04-2010 at 11:41 AM.
    2008 GMC Sierra - 5.3L, 6" lift, 35" Nittos, K&N CAI, Rhino Liner

    1990 Mustang GT- 347 Stroker, Nitrous, full suspension and lots more

    1995 Chevy S-10 - 406 SBC, 400 Turbo, Dual tunnel ram, Dart 215 Pro1 heads, Nitrous, full tub, 9in rearend

  4. #4
    The One Smokedawg's Avatar
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    Re: 99 Sierra heater problems....

    Heater is working great now..Thanks!
    2008 GMC Sierra - 5.3L, 6" lift, 35" Nittos, K&N CAI, Rhino Liner

    1990 Mustang GT- 347 Stroker, Nitrous, full suspension and lots more

    1995 Chevy S-10 - 406 SBC, 400 Turbo, Dual tunnel ram, Dart 215 Pro1 heads, Nitrous, full tub, 9in rearend

  5. #5
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    Re: 99 Sierra heater problems....

    Great,glad to help.

 

 

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