It appears that answered by a verified chevy mechanic.
2011 impala blend door actuator reset.
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First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or.
Just replaced blend door actuator on 2011 impala and its still clicking when it tries to recalibrate.
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The topic of how to perform the actuator recalibration procedure on chevrolet gmc and cadillac trucks and suvs has become an ever increasing topic of discussion.
Installing fuse and waiting another.
Order blend door actuator for your 2011 chevrolet impala and pick it up in store make your purchase find a store near you and get directions.
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This grind or click sound is actually the plastic gears stripping inside.
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This actuator assembly might fit a few other models but double check the part numbers for your car.
My 04 tahoe aux heat air temp blend door doesn t want to operate properly replaced actuator motor and reset all by pulling hvac fuse for 1 min.
Easy to use parts catalog.
An actuator can go bad in of two ways.
Parts counter people call this the upper actuator.
A blend door actuator is made up of an electric motor that turns a plastic gear set in one direction or another which is connected to an air control door pivot at the final drive of the unit.