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yes - either by the dealership (computer) or with a manual procedure to sync the variable resistor (1-5 volts signal for position - 1 volt = 51 counts) to the steppermotor control - it involes removing the heater fuse (#?) and turning the ignition switch to run for 40seconds then off and putting the fuse back in and restarting (check a shop manual for exact directions - looks simple) - good luck

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โˆ™ 2009-04-15 22:20:01
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Q: Is any type of programming required for HVAC blend door actuator for rear HVAC on 2002 trailblazer ext unit is located on top of airbox and downstream from the blower in the right rear of the vehicle?
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