Four Seasons
Harness Connector

Four Seasons 37251 HVAC Blower Motor Resistor Harness - Front

Brand Four Seasons 37251
Position Front
Connector Shape Rectangular
Description Harness Connectors
Gender Female
Style Harness Connector
Terminal Gender Female
Terminal Quantity 6
Type Connector
Product line Harness Connector
Fits Chevrolet and GMC · 186 vehicles

Harness connector. Female rectangular connector for HVAC wiring repairs.

Six terminals. Supports secure electrical connections in the harness.

Female terminals. Built for reliable mating with compatible connectors.

Cross-references Champion Spark Plug 806, Four Seasons 37251 and 1P1438 for the same application. See all 9.

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Harness Connector for HVAC Repair

Four Seasons 37251 is a female HVAC blower motor resistor harness connector built for front-unit electrical repairs on a wide range of Chevrolet and GMC vans. With a rectangular body and 6 female terminals, it supports direct connector replacement where heat-damaged or broken wiring plugs need to be restored.

This Four Seasons Harness Connector line focuses on serviceable electrical connections for HVAC and related front-unit components. Part number 37251 is used in applications across Chevrolet Express and GMC Savana platforms, including front-position repairs on models with standard or heavy-duty heater configurations.

Key Features

  • Female harness connector with a rectangular shape
  • 6-terminal design for HVAC blower motor resistor harness applications
  • Front-unit service connector for select Chevrolet and GMC vehicles
  • Direct-fit style replacement for damaged or worn electrical plugs
  • Four Seasons part number 37251

Detailed Description

Four Seasons 37251 is an HVAC blower motor resistor harness connector designed for repair work on Chevrolet Express and GMC Savana electrical systems. It is listed for front-position applications and appears in fitments covering 1996-2018 Chevrolet Express 1500, Express 2500, and Express 3500, plus 1996-2018 GMC Savana 1500, Savana 2500, and Savana 3500. Additional coverage includes Chevrolet Astro, GMC Safari, Chevrolet G30, and GMC G3500 applications where the connector style matches the vehicle harness.

This part cross-references Champion Spark Plug 806 for the same application. If you are servicing a Chevrolet Express 2500 front HVAC circuit or a GMC Savana 3500 front harness connection, 37251 provides the connector format specified for those repairs.

What It Helps Repair

  • Broken or heat-damaged HVAC blower motor resistor connector plugs
  • Intermittent blower operation caused by poor terminal contact
  • Melted or corroded front-unit harness connections
  • Electrical connection issues on Chevrolet Express and GMC Savana HVAC circuits
  • Connector mismatch during front HVAC harness service

Installation Notes and Tips

Verify the connector shape, terminal count, and terminal gender before installation. Confirm the vehicle position and heater configuration against the fitment listing, especially on Chevrolet Express and GMC Savana models with standard, heavy-duty heater, or front-unit notes. Compare the existing connector to Four Seasons 37251 before final assembly to ensure the harness plug matches the original application.

Quality Assurance

Four Seasons supplies HVAC electrical service components for repair-focused applications, and this connector is cataloged for specific OE-style fitment across multiple Chevrolet and GMC platforms. Use the listed vehicle coverage and connector attributes to confirm application accuracy before installation.

This part fits 186 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2018ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2018ChevroletExpress 2500FrontWhite; 6 Term. Female; Harness Connector
2018ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2018GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2018GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2017ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2017ChevroletExpress 2500FrontWhite; 6 Term. Female; Harness Connector
2017ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2017GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2017GMCSavana 2500FrontWhite; 6 Term. Female; Harness Connector
2017GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2017GMCSavana 3500FrontWhite; 6 Term. Female; Harness Connector
2016ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2016ChevroletExpress 2500FrontWhite; 6 Term. Female; Harness Connector
2016ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2016ChevroletExpress 3500Frontw/o Heavy Duty Heater; Harness Connector
2016GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2016GMCSavana 2500FrontWhite; 6 Term. Female; Harness Connector
2016GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2016GMCSavana 3500FrontWhite; 6 Term. Female; Harness Connector
2015ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2015ChevroletExpress 2500FrontWhite; 6 Term. Female; Harness Connector
2015ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2015ChevroletExpress 3500FrontWhite; 6 Term. Female; w/o Heavy Duty Heater; Harness Connector
2015GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2015GMCSavana 2500FrontWhite; 6 Term. Female; Harness Connector
2015GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2015GMCSavana 3500FrontWhite; 6 Term. Female; Harness Connector
2014ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2014ChevroletExpress 1500FrontEngine Cooling Fan Motor Connector fits various makes and models.; Harness Connector
2014ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2014ChevroletExpress 2500FrontWhite; Standard; 6 Term. Female; Harness Connector
2014ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2014ChevroletExpress 3500FrontStandard; w/ Heavy Duty Heater; Harness Connector
2014GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2014GMCSavana 1500FrontEngine Cooling Fan Motor Connector fits various makes and models.; Harness Connector
2014GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2014GMCSavana 2500FrontWhite; Standard; 6 Term. Female; Harness Connector
2014GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2014GMCSavana 3500FrontEngine Cooling Fan Motor Connector fits various makes and models.; Harness Connector
2013ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2013ChevroletExpress 1500FrontEngine Cooling Fan Motor Connector fits various makes and models.; Harness Connector
2013ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2013ChevroletExpress 2500FrontWhite; Standard; 6 Term. Female; Harness Connector
2013ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2013ChevroletExpress 3500FrontStandard; w/o Heavy Duty Heater; Harness Connector
2013GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2013GMCSavana 1500FrontEngine Cooling Fan Motor Connector fits various makes and models.; Harness Connector
2013GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2013GMCSavana 2500FrontWhite; Standard; 6 Term. Female; Harness Connector
2013GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2013GMCSavana 3500FrontEngine Cooling Fan Motor Connector fits various makes and models.; Harness Connector
2012ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2012ChevroletExpress 1500FrontEngine Cooling Fan Motor Connector fits various makes and models.; Harness Connector
2012ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2012ChevroletExpress 2500FrontEngine Cooling Fan Motor Connector fits various makes and models.; Harness Connector
2012ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2012ChevroletExpress 3500FrontEngine Cooling Fan Motor Connector fits various makes and models.; Harness Connector
2012GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2012GMCSavana 1500FrontStandard; w/ Heavy Duty Heater; Harness Connector
2012GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2012GMCSavana 2500N/Astandard; w/ Heavy Duty Heater; Front Unit; Harness Connector
2012GMCSavana 2500FrontStandard; w/ Heavy Duty Heater; Harness Connector
2012GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2012GMCSavana 3500N/Astandard; w/ Heavy Duty Heater; Front Unit; Harness Connector
2012GMCSavana 3500FrontStandard; w/ Heavy Duty Heater; Harness Connector
2011ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2011ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2011ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2011GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2011GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2011GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2010ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2010ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2010ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2010GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2010GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2010GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2009ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2009ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2009ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2009GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2009GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2009GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2008ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2008ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2008ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2008GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2008GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2008GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2007ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2007ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2007ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2007GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2007GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2007GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2006ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2006ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2006ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2006GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2006GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2006GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2005ChevroletAstroN/Astandard; Front Unit; Harness Connector
2005ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2005ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2005ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2005GMCSafariN/Astandard; Front Unit; Harness Connector
2005GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2005GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2005GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2004ChevroletAstroN/Astandard; Front Unit; Harness Connector
2004ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2004ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2004ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2004GMCSafariN/Astandard; Front Unit; Harness Connector
2004GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2004GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2004GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2003ChevroletAstroN/Astandard; Front Unit; Harness Connector
2003ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2003ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2003ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2003GMCSafariN/Astandard; Front Unit; Harness Connector
2003GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2003GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2003GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2002ChevroletAstroN/Astandard; Front Unit; Harness Connector
2002ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2002ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2002ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2002ChevroletG30N/Astandard; Front Unit; Harness Connector
2002GMCSafariN/Astandard; Front Unit; Harness Connector
2002GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2002GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2002GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2001ChevroletAstroN/Astandard; Front Unit; Harness Connector
2001ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2001ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2001ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2001ChevroletG30N/Astandard; Front Unit; Harness Connector
2001GMCSafariN/Astandard; Front Unit; Harness Connector
2001GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2001GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2001GMCSavana 3500N/Astandard; Front Unit; Harness Connector
2000ChevroletAstroN/Astandard; Front Unit; Harness Connector
2000ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
2000ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
2000ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
2000GMCSafariN/Astandard; Front Unit; Harness Connector
2000GMCSavana 1500N/Astandard; Front Unit; Harness Connector
2000GMCSavana 2500N/Astandard; Front Unit; Harness Connector
2000GMCSavana 3500N/Astandard; Front Unit; Harness Connector
1999ChevroletAstroN/Astandard; Front Unit; Harness Connector
1999ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
1999ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
1999ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
1999GMCSafariN/Astandard; Front Unit; Harness Connector
1999GMCSavana 1500N/Astandard; Front Unit; Harness Connector
1999GMCSavana 2500N/Astandard; Front Unit; Harness Connector
1999GMCSavana 3500N/Astandard; Front Unit; Harness Connector
1998ChevroletAstroN/Astandard; Front Unit; Harness Connector
1998ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
1998ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
1998ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
1998GMCSafariN/Astandard; Front Unit; Harness Connector
1998GMCSavana 1500N/Astandard; Front Unit; Harness Connector
1998GMCSavana 2500N/Astandard; Front Unit; Harness Connector
1998GMCSavana 3500N/Astandard; Front Unit; Harness Connector
1997ChevroletAstroN/Astandard; Front Unit; Harness Connector
1997ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
1997ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
1997ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
1997GMCSafariN/Astandard; Front Unit; Harness Connector
1997GMCSavana 1500N/Astandard; Front Unit; Harness Connector
1997GMCSavana 2500N/Astandard; Front Unit; Harness Connector
1997GMCSavana 3500N/Astandard; Front Unit; Harness Connector
1996ChevroletAstroN/Astandard; Front Unit; Harness Connector
1996ChevroletExpress 1500N/Astandard; Front Unit; Harness Connector
1996ChevroletExpress 2500N/Astandard; Front Unit; Harness Connector
1996ChevroletExpress 3500N/Astandard; Front Unit; Harness Connector
1996ChevroletG30N/Astandard; Front Unit; Harness Connector
1996GMCG3500Frontw/ Heavy Duty Heater; Harness Connector
1996GMCSafariN/Astandard; Front Unit; Harness Connector
1996GMCSavana 1500N/Astandard; Front Unit; Harness Connector
1996GMCSavana 2500N/Astandard; Front Unit; Harness Connector
1996GMCSavana 3500N/Astandard; Front Unit; Harness Connector
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Champion Spark Plug — 806Four Seasons — 372511P1438121026981216074615306007A77251HC5039PT1134