Dorman 973-186 HVAC Blower Motor Resistor
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Dorman

Dorman 973-186 HVAC Blower Motor Resistor

Brand Dorman 973-186
Bolt Hole Quantity 2
Connector Gender Female
Connector Quantity 1
Connector Shape Rectangular
Mounting Hardware Included No
Package Contents Blower Motor Resistor and Instructions
Terminal Gender Male
Terminal Quantity 4
Terminal Type Blade
Wire Quantity 0
Wiring Harness Included No
Fits Pontiac and Chevrolet · 11 vehicles

Direct replacement. Matches original operation and performance for a proper HVAC repair.

Rectangular connector with blade terminals for a straightforward electrical connection.

Includes instructions for easier installation and setup.

Cross-references 1580202, DR763 and RU379 for the same application. See all 4.

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Not what you need? See all HVAC Blower Motor Resistor options

HVAC Blower Motor Resistor Replacement

Dorman 973-186 is a direct replacement HVAC blower motor resistor for vehicles with manual air conditioning controls. It restores proper blower speed operation when the original resistor burns out, helping return heating and cooling performance to normal.

Fits 2003-2008 Pontiac Vibe and 1998-2002 Chevrolet Prizm with manual A/C controls. This Dorman 973-186 blower motor resistor is built to match the original equipment operation on the listed applications.

Key Features

  • Direct replacement blower motor resistor for HVAC blower speed control
  • Designed to match original equipment operation and performance
  • Rectangular 1-connector design with 4 terminals
  • Female connector and male blade terminals
  • 2 bolt holes for mounting on the HVAC case
  • Package includes the blower motor resistor and instructions

Detailed Description

This HVAC blower motor resistor is used in manual climate control systems to regulate blower fan speeds. When the resistor fails, the fan may only work on certain speeds or stop working altogether. Dorman 973-186 provides a direct-fit replacement for select Pontiac Vibe and Chevrolet Prizm models, making it a practical choice for restoring cabin airflow control. Cross-reference part numbers for the same application include DR763 and RU379.

Common Problems It Can Solve

  • Blower motor works on only one speed
  • Lower fan speeds stop functioning
  • No airflow from the HVAC blower on selected settings
  • Intermittent heater or A/C fan operation
  • Burnt or heat-damaged original resistor

Installation Notes and Tips

Verify that the vehicle has manual air conditioning controls before ordering. Inspect the blower motor connector and surrounding HVAC case for heat damage before installation. The resistor mounts with 2 bolt holes and uses a single rectangular female connector, so confirm the connector shape and terminal layout match the original part. Dorman 973-186 is intended for direct replacement use on the listed Chevrolet Prizm and Pontiac Vibe applications.

Quality Assurance

Dorman designs this replacement resistor to follow the operation and performance of the original equipment part on the specified vehicles. Part number 973-186 is engineered for the listed fitment and supplied with instructions for installation reference.

Related reading

This part fits 11 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2008PontiacVibeN/ACompatible with vehicles equipped with manual air conditioning controls.
2007PontiacVibeN/ACompatible with vehicles equipped with manual air conditioning controls.
2006PontiacVibeN/ACompatible with vehicles equipped with manual air conditioning controls.
2005PontiacVibeN/ACompatible with vehicles equipped with manual air conditioning controls.
2004PontiacVibeN/ACompatible with vehicles equipped with manual air conditioning controls.
2003PontiacVibeN/ACompatible with vehicles equipped with manual air conditioning controls.
2002ChevroletPrizmN/ACompatible with vehicles equipped with manual air conditioning controls.
2001ChevroletPrizmN/ACompatible with vehicles equipped with manual air conditioning controls.
2000ChevroletPrizmN/ACompatible with vehicles equipped with manual air conditioning controls.
1999ChevroletPrizmN/ACompatible with vehicles equipped with manual air conditioning controls.
1998ChevroletPrizmN/ACompatible with vehicles equipped with manual air conditioning controls.
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
1580202DR763RU379RU1072