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Dorman 973-508 HVAC Blower Motor Resistor Kit - FrontOE Quality 60-Day Returns
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Part #: 973-508

Dorman 973-508 HVAC Blower Motor Resistor Kit - Front

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⚙️ 155 vehicles fit this part
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🚗Fitment: Chevrolet, Buick, GMC, Saab, Pontiac, Cadillac, and Oldsmobile, Impala Limited, Impala, Allure, LaCrosse, Trailblazer, Envoy, 9-7x, Grand Prix, Rainier, Monte Carlo, Silverado 1500 Classic, Silverado 1500 HD Classic, Silverado 2500 HD Classic, Silverado 3500 Classic, Sierra 1500 Classic, Sierra 1500 HD Classic, Sierra 2500 HD Classic, Sierra 3500 Classic, Escalade, Escalade ESV, Escalade EXT, Avalanche 1500, Avalanche 2500, Silverado 1500, Silverado 1500 HD, Silverado 2500 HD, Silverado 3500, Suburban 1500, Suburban 2500, Tahoe, Trailblazer EXT, Envoy XL, Sierra 1500, Sierra 1500 HD, Sierra 2500 HD, Sierra 3500, Yukon, Yukon XL 1500, Yukon XL 2500, Century, Envoy XUV, Silverado 2500, Sierra 2500, and Bravada
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Reliable HVAC Blower Motor Resistor Kit for Select GM Vehicles

The Dorman 973-508 HVAC Blower Motor Resistor Kit is designed to restore proper blower motor function in various Buick, Cadillac, Chevrolet, GMC, Oldsmobile, Pontiac, and Saab models. This kit includes a blower motor resistor and a wiring harness to ensure a secure and efficient electrical connection.

  • Includes 1 blower motor resistor and 1 wiring harness with a 6-inch length
  • Features 5 male blade terminals and 1 female connector for reliable connectivity
  • Equipped with 7 mounting holes for secure installation (mounting hardware not included)
  • Wiring harness includes 5 wires and 1 connector for streamlined replacement
  • Compatible with multiple GM models including Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade, Buick LaCrosse, and more

Product Details and Specifications

The Dorman 973-508 blower motor resistor kit is engineered to meet the electrical requirements of HVAC systems in a wide range of GM vehicles. The wiring harness length of 6 inches provides sufficient reach for installation without excess slack. The blade terminal type ensures a secure and corrosion-resistant connection, with 5 male terminals mating to the female connector included in the kit. The resistor features 7 mounting holes to accommodate various mounting configurations, although mounting hardware is not included. This kit is designed to replace faulty blower motor resistors that cause inconsistent fan speeds or complete blower failure.

Compatible Vehicles and Applications

This blower motor resistor kit is compatible with the following makes and models:

  • Buick Allure, Century, LaCrosse, Rainier
  • Cadillac Escalade, Escalade ESV, Escalade EXT
  • Chevrolet Avalanche 1500/2500, Impala, Monte Carlo, Silverado 1500/2500/3500, Suburban 1500/2500, Tahoe, Trailblazer, Trailblazer EXT
  • GMC Envoy, Envoy XL, Envoy XUV, Sierra 1500/2500/3500, Yukon, Yukon XL 1500/2500
  • Oldsmobile Bravada, Pontiac Grand Prix
  • Saab 9-7x

Common Issues Addressed by This Resistor Kit

  • Intermittent or non-functioning blower motor speeds
  • Blower motor stuck on one speed setting
  • Complete loss of HVAC blower motor operation
  • Electrical connection failures due to worn terminals or wiring harness
  • Overheating or resistor burnout causing HVAC system malfunctions

Installation Notes and Tips

Before installation, disconnect the vehicle battery to prevent electrical shorts. The included wiring harness simplifies replacement by matching the original connector and terminal types. Ensure the resistor is mounted securely using the 7 mounting holes; however, mounting hardware must be sourced separately. Verify all electrical connections are tight and free of corrosion. After installation, test all blower motor speeds to confirm proper operation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The 973-508 blower motor resistor kit undergoes quality control testing to ensure reliable performance in compatible Buick, Cadillac, Chevrolet, GMC, Oldsmobile, Pontiac, and Saab vehicles. Warranty coverage details can be obtained from the product documentation or manufacturer.

BrandDorman
Part Number973-508
Connector GenderFemale
Connector Quantity1
Gasket or Seal IncludedNo
Mounting Hardware IncludedNo
Mounting Hole Quantity7
Package Contents1 Blower Motor Resistor; 1 Wire Harness
Terminal GenderMale
Terminal Quantity5
Terminal TypeBlade
Wire Quantity5
Wiring Harness IncludedYes
Wiring Harness Length6

This part fits 155 vehicles. Search below:

YearMakeModelPositionNotes
2016ChevroletImpala LimitedFront
2015ChevroletImpala LimitedFront
2014ChevroletImpala LimitedFront
2013ChevroletImpalaFront
2012ChevroletImpalaFront
2011ChevroletImpalaFront
2010ChevroletImpalaFront
2009BuickAllureFront
2009BuickLaCrosseFront
2009ChevroletImpalaFront
2009ChevroletTrailblazerFrontw/Front AC; w/Auxiliary Automatic Controls
2009GMCEnvoyFrontw/Front AC; w/Auxiliary Automatic Controls
2009Saab9-7xN/AFor vehicles equipped with Air Conditioning
2008BuickAllureFront
2008BuickLaCrosseFront
2008ChevroletImpalaFront
2008ChevroletTrailblazerFrontw/Front AC; w/Auxiliary Automatic Controls
2008GMCEnvoyFrontw/Front AC; w/Auxiliary Automatic Controls
2008PontiacGrand PrixFront
2008Saab9-7xN/AFor vehicles equipped with Air Conditioning
2007BuickAllureFront
2007BuickLaCrosseFront
2007BuickRainierFrontw/Front AC; w/Auxiliary Automatic Controls
2007ChevroletImpalaFront
2007ChevroletMonte CarloFront
2007ChevroletSilverado 1500 ClassicFrontCompatible with automatic air conditioning controls.
2007ChevroletSilverado 1500 HD ClassicFrontCompatible with automatic air conditioning controls.
2007ChevroletSilverado 2500 HD ClassicFrontCompatible with automatic air conditioning controls.
2007ChevroletSilverado 3500 ClassicFrontCompatible with automatic air conditioning controls.
2007ChevroletTrailblazerFrontw/Front AC; w/Auxiliary Automatic Controls
2007GMCEnvoyFrontw/Front AC; w/Auxiliary Automatic Controls
2007GMCSierra 1500 ClassicFrontCompatible with automatic air conditioning controls.
2007GMCSierra 1500 HD ClassicFrontCompatible with automatic air conditioning controls.
2007GMCSierra 2500 HD ClassicFrontCompatible with automatic air conditioning controls.
2007GMCSierra 3500 ClassicFrontCompatible with automatic air conditioning controls.
2007PontiacGrand PrixFront
2007Saab9-7xN/AFor vehicles equipped with Air Conditioning
2006BuickAllureFront
2006BuickLaCrosseFront
2006BuickRainierFrontw/Front AC; w/Auxiliary Automatic Controls
2006CadillacEscaladeFrontCompatible with automatic air conditioning controls.
2006CadillacEscalade ESVFrontCompatible with automatic air conditioning controls.
2006CadillacEscalade EXTFrontCompatible with automatic air conditioning controls.
2006ChevroletAvalanche 1500FrontCompatible with automatic air conditioning controls.
2006ChevroletAvalanche 2500FrontCompatible with automatic air conditioning controls.
2006ChevroletImpalaFront
2006ChevroletMonte CarloFront
2006ChevroletSilverado 1500FrontCompatible with automatic air conditioning controls.
2006ChevroletSilverado 1500 HDFrontCompatible with automatic air conditioning controls.
2006ChevroletSilverado 2500 HDFrontCompatible with automatic air conditioning controls.
2006ChevroletSilverado 3500FrontCompatible with automatic air conditioning controls.
2006ChevroletSuburban 1500FrontCompatible with automatic air conditioning controls.
2006ChevroletSuburban 2500FrontCompatible with automatic air conditioning controls.
2006ChevroletTahoeFrontCompatible with automatic air conditioning controls.
2006ChevroletTrailblazerFrontw/Front AC; w/Auxiliary Automatic Controls
2006ChevroletTrailblazer EXTFrontw/Front AC; w/Auxiliary Automatic Controls
2006GMCEnvoyFrontw/Front AC; w/Auxiliary Automatic Controls
2006GMCEnvoy XLFrontw/Front AC; w/Auxiliary Automatic Controls
2006GMCSierra 1500FrontCompatible with automatic air conditioning controls.
2006GMCSierra 1500 HDFrontCompatible with automatic air conditioning controls.
2006GMCSierra 2500 HDFrontCompatible with automatic air conditioning controls.
2006GMCSierra 3500FrontCompatible with automatic air conditioning controls.
2006GMCYukonFrontCompatible with automatic air conditioning controls.
2006GMCYukon XL 1500FrontCompatible with automatic air conditioning controls.
2006GMCYukon XL 2500FrontCompatible with automatic air conditioning controls.
2006PontiacGrand PrixFront
2006Saab9-7xN/ALabel No. 52416100; w/Air Conditioning
2006Saab9-7xN/ALabel No. 52413530 or 52409643; w/Air Conditioning
2005BuickAllureFront
2005BuickCenturyFrontClimate Control
2005BuickLaCrosseFront
2005BuickRainierFrontw/Front AC; w/Auxiliary Automatic Controls
2005CadillacEscaladeFrontCompatible with automatic air conditioning controls.
2005CadillacEscalade ESVFrontCompatible with automatic air conditioning controls.
2005CadillacEscalade EXTFrontCompatible with automatic air conditioning controls.
2005ChevroletAvalanche 1500FrontCompatible with automatic air conditioning controls.
2005ChevroletAvalanche 2500FrontCompatible with automatic air conditioning controls.
2005ChevroletImpalaFront
2005ChevroletMonte CarloFront
2005ChevroletSilverado 1500FrontCompatible with automatic air conditioning controls.
2005ChevroletSilverado 1500 HDFrontCompatible with automatic air conditioning controls.
2005ChevroletSilverado 2500 HDFrontCompatible with automatic air conditioning controls.
2005ChevroletSilverado 3500FrontCompatible with automatic air conditioning controls.
2005ChevroletSuburban 1500FrontCompatible with automatic air conditioning controls.
2005ChevroletSuburban 2500FrontCompatible with automatic air conditioning controls.
2005ChevroletTahoeFrontCompatible with automatic air conditioning controls.
2005ChevroletTrailblazerFrontw/Front AC; w/Auxiliary Automatic Controls
2005ChevroletTrailblazer EXTFrontw/Front AC; w/Auxiliary Automatic Controls
2005GMCEnvoyFrontw/Front AC; w/Auxiliary Automatic Controls
2005GMCEnvoy XLFrontw/Front AC; w/Auxiliary Automatic Controls
2005GMCEnvoy XUVFrontw/Front AC; w/Auxiliary Automatic Controls
2005GMCSierra 1500FrontCompatible with automatic air conditioning controls.
2005GMCSierra 1500 HDFrontCompatible with automatic air conditioning controls.
2005GMCSierra 2500 HDFrontCompatible with automatic air conditioning controls.
2005GMCSierra 3500FrontCompatible with automatic air conditioning controls.
2005GMCYukonFrontCompatible with automatic air conditioning controls.
2005GMCYukon XL 1500FrontCompatible with automatic air conditioning controls.
2005GMCYukon XL 2500FrontCompatible with automatic air conditioning controls.
2005PontiacGrand PrixFront
2005Saab9-7xN/AFor vehicles equipped with Air Conditioning
2004BuickRainierFrontw/Front AC; w/Auxiliary Automatic Controls
2004CadillacEscaladeFrontCompatible with automatic air conditioning controls.
2004CadillacEscalade ESVFrontCompatible with automatic air conditioning controls.
2004CadillacEscalade EXTFrontCompatible with automatic air conditioning controls.
2004ChevroletAvalanche 1500FrontCompatible with automatic air conditioning controls.
2004ChevroletAvalanche 2500FrontCompatible with automatic air conditioning controls.
2004ChevroletImpalaFront
2004ChevroletMonte CarloFront
2004ChevroletSilverado 1500FrontCompatible with automatic air conditioning controls.
2004ChevroletSilverado 2500FrontCompatible with automatic air conditioning controls.
2004ChevroletSilverado 2500 HDFrontCompatible with automatic air conditioning controls.
2004ChevroletSilverado 3500FrontCompatible with automatic air conditioning controls.
2004ChevroletSuburban 1500FrontCompatible with automatic air conditioning controls.
2004ChevroletSuburban 2500FrontCompatible with automatic air conditioning controls.
2004ChevroletTahoeFrontCompatible with automatic air conditioning controls.
2004ChevroletTrailblazerFrontw/Front AC; w/Auxiliary Automatic Controls
2004ChevroletTrailblazer EXTFrontw/Front AC; w/Auxiliary Automatic Controls
2004GMCEnvoyFrontw/Front AC; w/Auxiliary Automatic Controls
2004GMCEnvoy XLFrontw/Front AC; w/Auxiliary Automatic Controls
2004GMCEnvoy XUVFrontw/Front AC; w/Auxiliary Automatic Controls
2004GMCSierra 1500FrontCompatible with automatic air conditioning controls.
2004GMCSierra 2500FrontCompatible with automatic air conditioning controls.
2004GMCSierra 2500 HDFrontCompatible with automatic air conditioning controls.
2004GMCSierra 3500FrontCompatible with automatic air conditioning controls.
2004GMCYukonFrontCompatible with automatic air conditioning controls.
2004GMCYukon XL 1500FrontCompatible with automatic air conditioning controls.
2004GMCYukon XL 2500FrontCompatible with automatic air conditioning controls.
2004OldsmobileBravadaFrontw/Front AC; w/Auxiliary Automatic Controls
2004PontiacGrand PrixFront
2003CadillacEscaladeFrontCompatible with automatic air conditioning controls.
2003CadillacEscalade ESVFrontCompatible with automatic air conditioning controls.
2003CadillacEscalade EXTFrontCompatible with automatic air conditioning controls.
2003ChevroletAvalanche 1500FrontCompatible with automatic air conditioning controls.
2003ChevroletAvalanche 2500FrontCompatible with automatic air conditioning controls.
2003ChevroletSilverado 1500FrontCompatible with automatic air conditioning controls.
2003ChevroletSilverado 1500 HDFrontCompatible with automatic air conditioning controls.
2003ChevroletSilverado 2500FrontCompatible with automatic air conditioning controls.
2003ChevroletSilverado 2500 HDFrontCompatible with automatic air conditioning controls.
2003ChevroletSilverado 3500FrontCompatible with automatic air conditioning controls.
2003ChevroletSuburban 1500FrontCompatible with automatic air conditioning controls.
2003ChevroletSuburban 2500FrontCompatible with automatic air conditioning controls.
2003ChevroletTahoeFrontCompatible with automatic air conditioning controls.
2003ChevroletTrailblazerFrontw/Front AC; w/Auxiliary Automatic Controls
2003ChevroletTrailblazer EXTFrontw/Front AC; w/Auxiliary Automatic Controls
2003GMCEnvoyFrontw/Front AC; w/Auxiliary Automatic Controls
2003GMCEnvoy XLFrontw/Front AC; w/Auxiliary Automatic Controls
2003GMCSierra 1500FrontCompatible with automatic air conditioning controls.
2003GMCSierra 1500 HDFrontCompatible with automatic air conditioning controls.
2003GMCSierra 2500FrontCompatible with automatic air conditioning controls.
2003GMCSierra 2500 HDFrontCompatible with automatic air conditioning controls.
2003GMCSierra 3500FrontCompatible with automatic air conditioning controls.
2003GMCYukonFrontCompatible with automatic air conditioning controls.
2003GMCYukon XL 1500FrontCompatible with automatic air conditioning controls.
2003GMCYukon XL 2500FrontCompatible with automatic air conditioning controls.
2003OldsmobileBravadaFrontw/Front AC; w/Auxiliary Automatic Controls

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

103254084P1516APBMR017JA1639RU1321RU359

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.