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ACDelco GM Original Equipment 21991977 Heating and
ACDelco GM Original Equipment 21991977 Heating and

ACDelco GM Original Equipment 21991977 Heating and Air Conditioning Blower Control Module

Product ID : 21640505
4.3 out of 5 stars


Galleon Product ID 21640505
UPC / ISBN 707773831151
Shipping Weight 0.3 lbs
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Model 21991977
Manufacturer ACDelco
Shipping Dimension 5.71 x 5.51 x 3.7 inches
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*Price and Stocks may change without prior notice
*Packaging of actual item may differ from photo shown
  • Electrical items MAY be 110 volts.
  • 7 Day Return Policy
  • All products are genuine and original
  • Cash On Delivery/Cash Upon Pickup Available

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ACDelco GM Original Equipment 21991977 Heating and Features

  • Restore blower fan control functions

  • GM-recommended replacement part for your GM vehicle’s original factory component

  • Offering the quality, reliability, and durability of GM OE

  • Manufactured to GM OE specification for fit, form, and function


About ACDelco GM Original Equipment 21991977 Heating And

ACDelco GM Original Equipment HVAC Blower Control Modules regulate the blower fan motor speed using either a stepped resistor or a transistorized driver module. This original equipment blower control module is a GM-recommended replacement for your vehicle’s original component and has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.