Question about 2004 Buick Rainier

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Removed battery cable now air conditior blows out hot on driver side and cool on pass. side how to fix problesm

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Remove the negative batt cable again and try to reset system, this happens because the motors that control the temperature blend doors get out of syn with eachother, sometimes just removing the battery negative cable a few times fixes the issue, there is a new control head that fixes this problem but it is about $400

Posted on Jun 16, 2009


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Hello, this is cused by the drivers side temp door actuator. there are two electric motors that move the temp doors from cold to hot. there is one on the drivers side and one on the passenger side. you will need to replace the one for the drivers side.

  • Remove the left instrument panel (I/P) insulator.
  • Remove the knee bolster bracket bracket. Disconnect the electrical connector from the left air temperature actuator.
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  • Remove the left air temperature actuator.
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