Standard Ignition S-975 HVAC Blower Control Switch Connector - Front Left

Brand Standard Ignition S-975
Position Front Left
Connector Gender Male
Contents Includes Butt Splices
Harness Length - inches 18"
Terminal Gender Female
Terminal Type Blade
Fits Chevrolet, GMC, Pontiac, Cadillac, Oldsmobile, and Buick · 203 vehicles

OE-style repair part. Designed to fix common failure issues in electrical connections.

High-grade materials. Built for peak conductivity and reliable connections.

Includes butt splices. Ready for a cleaner, more complete repair.

Cross-references Four Seasons 37249, 1P1630 and 57-5411 for the same application. See all 8.

$50.03Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $50.03
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

HVAC Blower Control Switch Connector for GM Applications

Standard Ignition S-975 is an HVAC blower control switch connector built for repair work on vehicles with auxiliary heating or auxiliary AC systems. It uses high-grade materials for solid conductivity and dependable terminal contact, making it a practical replacement when the original connector is heat-damaged, brittle, or no longer locking securely.

  • Male connector with 1 connector housing
  • 6 female blade terminals for HVAC blower control switch circuits
  • 18-inch harness length for repair and splice-in service
  • Includes butt splices for wire repair connections
  • Direct-fit style connector for select Chevrolet, GMC, Pontiac, Buick, Cadillac, Oldsmobile, and Chevrolet/GMC van applications

Detailed Product Overview

The Standard Ignition S-975 is designed for HVAC blower control switch repair where the factory connector has failed from heat, corrosion, or terminal wear. This connector is commonly used on vehicles such as the Chevrolet Express, GMC Savana, Chevrolet Camaro, Pontiac Firebird, and Chevrolet Lumina, with fitment spanning 1988-2007 across the listed applications. Standard Ignition builds its pigtails and sockets with materials selected to maintain stable electrical contact and restore proper blower switch operation.

This part cross-references Four Seasons 37249 for the same application.

Common Repair Uses

  • Restores blower speed control when the original connector is burned or melted
  • Fixes intermittent HVAC fan operation caused by loose terminal contact
  • Addresses damaged wiring at the blower control switch connector
  • Replaces cracked or heat-stressed connector housings in dash HVAC circuits
  • Supports repair of auxiliary heater or auxiliary AC blower switch wiring

Installation Notes and Tips

Match the terminal style, connector gender, and wire count before installation. This connector uses 6 female blade terminals and an 18-inch harness, so verify wire routing and splice locations before cutting the original harness. For vehicles such as the Chevrolet Express, GMC Savana, and Chevrolet Suburban with auxiliary HVAC equipment, confirm the exact connector location and option package before service. Proper crimping and secure butt-splice connections are important for reliable blower control performance.

Quality Assurance

Standard Ignition draws on decades of electrical parts development to produce replacement pigtails and sockets that address common OE connector failure points. The S-975 is built for consistent conductivity and dependable connection quality in HVAC repair service.

This part fits 203 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody Type# DoorsDrive TypeLitersCylindersPositionNotes
2007ChevroletExpress 1500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2007ChevroletExpress 2500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2007ChevroletExpress 3500———4.8LV8N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2007ChevroletExpress 3500———6.0LV8N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2007ChevroletExpress 3500———6.6LV8N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2007GMCSavana 1500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2007GMCSavana 2500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2007GMCSavana 3500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2006ChevroletExpress 1500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2006ChevroletExpress 2500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2006ChevroletExpress 3500———4.8LV8N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2006ChevroletExpress 3500———6.0LV8N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2006ChevroletExpress 3500———6.6LV8N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2006GMCSavana 1500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2006GMCSavana 2500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2006GMCSavana 3500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2005ChevroletCavalier—————N/AMultiple Connectors Required; 6 Term.
2005ChevroletClassic—————Front LeftMay require multiple connectors for neutral safety switch.
2005ChevroletExpress 1500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2005ChevroletExpress 2500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2005ChevroletExpress 3500———4.8LV8N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2005ChevroletExpress 3500———6.0LV8N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2005GMCSavana 1500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2005GMCSavana 2500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2005GMCSavana 3500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2005PontiacSunfire—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
2004ChevroletCavalier—————N/AMultiple Connectors Required; 6 Term.
2004ChevroletClassic—————Front LeftMay require multiple connectors for neutral safety switch.
2004ChevroletExpress 1500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2004ChevroletExpress 2500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2004ChevroletExpress 3500———6.0LV8N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2004GMCSavana 1500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2004GMCSavana 2500—————N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2004GMCSavana 3500———6.0LV8N/AHVAC Blower Control Switch Connector compatible with Auxiliary AC.
2004PontiacSunfire—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
2003ChevroletCavalier—————N/AMultiple Connectors Required; 6 Term.
2003ChevroletExpress 1500—————N/ACompatible with vehicles with an auxiliary blower.
2003ChevroletExpress 2500—————N/ACompatible with vehicles with an auxiliary blower.
2003ChevroletExpress 3500———6.0LV8N/ACompatible with vehicles with an auxiliary blower.
2003ChevroletMalibu—————Front LeftMay require multiple connectors for neutral safety switch.
2003GMCSavana 1500—————N/ACompatible with vehicles with an auxiliary blower.
2003GMCSavana 2500—————N/ACompatible with vehicles with an auxiliary blower.
2003GMCSavana 3500—————N/ACompatible with vehicles with an auxiliary blower.
2003PontiacGrand Prix—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
2003PontiacSunfire—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
2002ChevroletCamaro—————N/A6 Term. Female
2002ChevroletCavalier—————N/AMultiple Connectors Required; 6 Term.
2002ChevroletExpress 1500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
2002ChevroletExpress 2500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
2002ChevroletExpress 3500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
2002ChevroletMalibu—————Front LeftMay require multiple connectors for neutral safety switch.
2002GMCSavana 1500—————N/ACompatible with vehicles with an auxiliary blower.
2002GMCSavana 2500—————N/ACompatible with vehicles with an auxiliary blower.
2002GMCSavana 3500—————N/ACompatible with vehicles with an auxiliary blower.
2002PontiacFirebird—————N/A—
2002PontiacGrand Prix—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
2002PontiacSunfire—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
2001ChevroletCamaro—————N/A6 Term. Female
2001ChevroletCavalier—————N/AMultiple Connectors Required; 6 Term.
2001ChevroletExpress 1500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
2001ChevroletExpress 2500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
2001ChevroletExpress 3500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
2001ChevroletLumina—————Front LeftMultiple connectors required, 6 terminal female.
2001ChevroletMalibu—————Front LeftMay require multiple connectors for neutral safety switch.
2001GMCSavana 1500—————N/ACompatible with vehicles with an auxiliary blower.
2001GMCSavana 2500—————N/ACompatible with vehicles with an auxiliary blower.
2001GMCSavana 3500—————N/ACompatible with vehicles with an auxiliary blower.
2001PontiacFirebird—————N/A—
2001PontiacGrand Prix—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
2001PontiacSunfire—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
2000ChevroletCamaro—————N/A6 Term. Female
2000ChevroletCavalier—————N/AMultiple Connectors Required; 6 Term.
2000ChevroletExpress 1500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
2000ChevroletExpress 2500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
2000ChevroletExpress 3500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
2000ChevroletLumina—————Front LeftMultiple connectors required, 6 terminal female.
2000ChevroletMalibu—————Front LeftMay require multiple connectors for neutral safety switch.
2000PontiacFirebird—————N/A—
2000PontiacGrand Prix—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
2000PontiacSunfire—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
1999CadillacDeVille—————Front LeftMay require multiple connectors for neutral safety switch.
1999ChevroletC1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1999ChevroletC2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1999ChevroletCamaro—————N/A6 Term. Female
1999ChevroletCavalierSedan————Front LeftMay require multiple connectors for neutral safety switch.
1999ChevroletExpress 1500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1999ChevroletExpress 2500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1999ChevroletExpress 3500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1999ChevroletK1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1999ChevroletK2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1999ChevroletLumina—————Front LeftMultiple connectors required, 6 terminal female.
1999ChevroletMalibu—————Front LeftMay require multiple connectors for neutral safety switch.
1999ChevroletSuburban 1500—————N/Aw/ Auxiliary Blower; Rear; In Dash
1999OldsmobileCutlass—————Front LeftMay require multiple connectors for neutral safety switch.
1999PontiacFirebird—————N/A—
1999PontiacGrand Prix—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
1999PontiacSunfire—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
1998CadillacDeVille—————Front LeftMay require multiple connectors for neutral safety switch.
1998ChevroletC1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1998ChevroletC2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1998ChevroletCamaro—————N/A6 Term. Female
1998ChevroletCavalierSedan————Front LeftMay require multiple connectors for neutral safety switch.
1998ChevroletExpress 1500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1998ChevroletExpress 2500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1998ChevroletExpress 3500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1998ChevroletK1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1998ChevroletK2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1998ChevroletLumina—————Front LeftMultiple connectors required, 6 terminal female.
1998ChevroletMalibu—————Front LeftMay require multiple connectors for neutral safety switch.
1998ChevroletSuburban 1500—————N/Aw/ Auxiliary Blower; Rear; In Dash
1998ChevroletTahoe—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1998GMCC1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1998GMCC2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1998GMCK1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1998GMCK2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1998GMCYukon—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1998OldsmobileCutlass—————Front LeftMay require multiple connectors for neutral safety switch.
1998PontiacFirebird—————N/A—
1998PontiacGrand Prix—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
1998PontiacSunfire—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
1997CadillacDeVille—————Front LeftMay require multiple connectors for neutral safety switch.
1997CadillacSeville—————Front LeftMay require multiple connectors for neutral safety switch.
1997ChevroletC1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1997ChevroletC2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1997ChevroletCamaro—————N/A6 Term. Female
1997ChevroletCavalierSedan————Front LeftMay require multiple connectors for neutral safety switch.
1997ChevroletExpress 1500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1997ChevroletExpress 2500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1997ChevroletExpress 3500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1997ChevroletK1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1997ChevroletK2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1997ChevroletLumina—————N/A—
1997ChevroletLumina—————Front LeftMultiple connectors required, 6 terminal female.
1997ChevroletMalibu—————Front LeftMay require multiple connectors for neutral safety switch.
1997ChevroletMonte Carlo—————N/A—
1997ChevroletSuburban 1500—————N/Aw/ Auxiliary Blower; Rear; In Dash
1997ChevroletTahoe—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1997GMCC1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1997GMCC2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1997GMCK1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1997GMCK2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1997GMCYukon—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1997OldsmobileCutlass—————Front LeftMay require multiple connectors for neutral safety switch.
1997OldsmobileCutlass Supreme—————Front LeftMay require multiple connectors for neutral safety switch.
1997PontiacFirebird—————N/A—
1997PontiacSunfire—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
1996BuickPark Avenue—————N/A—
1996CadillacDeVille—————N/A—
1996ChevroletC1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1996ChevroletC2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1996ChevroletCamaro—————N/A6 Term. Female
1996ChevroletCavalier—————N/AMultiple Connectors Required; 6 Term. Female; Front
1996ChevroletExpress 1500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1996ChevroletExpress 2500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1996ChevroletExpress 3500—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1996ChevroletG30—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1996ChevroletK1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1996ChevroletK2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1996ChevroletLumina—————N/A—
1996ChevroletLumina—————Front LeftMultiple connectors required, 6 terminal female.
1996ChevroletMonte Carlo—————N/A—
1996ChevroletSuburban 1500—————N/Aw/ Auxiliary Blower; Rear; In Dash
1996ChevroletTahoe—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1996GMCC1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1996GMCC2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1996GMCK1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1996GMCK2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1996GMCYukon—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1996OldsmobileAchieva—————Front LeftMay require multiple connectors for neutral safety switch.
1996PontiacFirebird—————N/A—
1996PontiacGrand Prix—————N/A—
1996PontiacGrand PrixSedan————Front LeftMay require multiple connectors for neutral safety switch.
1996PontiacSunfire—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
1995BuickPark Avenue—————N/A—
1995ChevroletC1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1995ChevroletC2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1995ChevroletCamaro—————N/A6 Term. Female
1995ChevroletCavalier—————N/AMultiple Connectors Required; 6 Term. Female; Front
1995ChevroletK1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1995ChevroletK2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1995ChevroletLumina—————N/A—
1995ChevroletLumina—————Front LeftMultiple connectors required, 6 terminal female.
1995ChevroletMonte Carlo—————N/A—
1995ChevroletSuburban 1500—————N/Aw/ Auxiliary Blower; Rear; In Dash
1995ChevroletTahoe—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1995GMCC1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1995GMCC2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1995GMCK1500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1995GMCK2500 Suburban—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1995GMCYukon—————N/ACompatible with vehicles equipped with an Auxiliary Heater.
1995PontiacFirebird—————N/A—
1995PontiacGrand Prix—————N/A—
1995PontiacSunfire—4 Door———Front LeftMay require multiple connectors for neutral safety switch.
1994ChevroletCamaro—————N/A6 Term. Female
1994PontiacFirebird—————N/A—
1994PontiacGrand Prix—————N/A—
1994PontiacGrand PrixSedan————Front LeftMay require multiple connectors for neutral safety switch.
1993BuickPark Avenue—————N/A—
1993ChevroletCamaro—————N/A—
1993PontiacFirebird—————N/A—
1992BuickPark Avenue—————N/A—
1991BuickPark Avenue—————N/A—
1988OldsmobileCutlass Supreme——FWD——N/AMay require multiple connectors for neutral safety switch.
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 372491P163057-541199815305888EC447PT5852PTA2027