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AC blowing heat on one side

Discussion in 'Chevy Trucks' started by TomsSnowPlowING, Aug 6, 2012.

  1. TomsSnowPlowING

    TomsSnowPlowING Senior Member
    Messages: 253

    AC blowing heat air on driver side. AC blowing cold air on passenger side. What could be wrong? Does this sometimes. BUT NOT ALL TIME YET. LOL.
    Look below to see what my control looks like. BOTH SIDES ARTE ON COLD.

    1344283152518.jpg
     
    Last edited: Aug 6, 2012
  2. TomsSnowPlowING

    TomsSnowPlowING Senior Member
    Messages: 253

    Got all my speeds back with BWD Blower Motor Resistor Part No. RU1264 & BWD Pigtail/Socket Part No. PT5793.
     
  3. brad96z28

    brad96z28 PlowSite.com Addict
    Messages: 1,526

    Blower motor resistor wont change or affect the temp only you blower speed. U have a blend door actuator acting up.
     
  4. leigh

    leigh PlowSite.com Addict
    from CT
    Messages: 1,997

    Mine did the same thing last week,same controls as yours.Hot air from vent to the right of steering wheel.I moved mixing controls up and down 10-15 times,shut truck off and restarted.Hasn't happened again so far.Hoping it was a one off.
     
  5. Plowtoy

    Plowtoy Senior Member
    Messages: 929

    2nd the blend door actuators. My boss just had his done on his Yukon to the tune of $1200 Its fairly involved and there are 3 that need to be replaced while you have the dash out. Its the hard one (just under the dash board behind the glove box to the left) that is most likely bad. NOT A FUN JOB so I'm told. Good luck to ya!!
     
  6. brad96z28

    brad96z28 PlowSite.com Addict
    Messages: 1,526

    There not bad the one on the bottom is like a 15 min job the one on the top takes me an hour or so.
     
  7. 06Sierra

    06Sierra PlowSite.com Addict
    from Maine
    Messages: 1,329

    Driver side is easy. It's the passenger side that is a pain.
     
  8. TomsSnowPlowING

    TomsSnowPlowING Senior Member
    Messages: 253

    Only done this 2 times within a few months.
    I did turn off engine when got to my mowing job. When was done had cold air back on driver's side. Could be signs of those parts going bad?