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Four Seasons 37577 HVAC Blower Control Switch - FrontOE Quality 60-Day Returns
Four Seasons 37577 HVAC Blower Control Switch - Front - view 1
Four Seasons 37577 HVAC Blower Control Switch - Front - view 2
Four Seasons 37577 HVAC Blower Control Switch - Front - view 3
Four Seasons 37577 HVAC Blower Control Switch - Front - view 4
Part #: 7100

Four Seasons 37577 HVAC Blower Control Switch - Front

Selector Switch
⚙️ 142 vehicles fit this part
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Reliable HVAC Blower Control for Chevrolet and Dodge Vehicles

The Four Seasons Selector Switch 37577 is designed to provide precise control over your vehicle's HVAC blower system. Engineered to meet or exceed OEM standards, this blower control switch ensures consistent performance for select Chevrolet, Dodge, GMC, Isuzu, Jeep, and Oldsmobile models.

  • Compatible with Chevrolet B1500, B2500, B3500, Blazer, S10, Sonoma
  • Fits Dodge Ram 1500 Van, Ram 2500 Van, Ram 3500 Van
  • Works with GMC Bravada and Hombre
  • Suitable for Jeep TJ and Wrangler models
  • Five-terminal rectangular male connector for secure fit
  • Meets or exceeds OEM specifications for reliable operation

About the Four Seasons Selector Switch Product Line

The Selector Switch line from Four Seasons focuses on delivering durable and precise HVAC control components. This product line is engineered to provide dependable blower control switches that integrate seamlessly with factory wiring and connectors. The 37577 model exemplifies this approach by offering a five-terminal rectangular male connector designed for straightforward installation and long-term reliability.

Detailed Product Description

The Four Seasons 37577 HVAC blower control switch features a rectangular male connector with five terminals, ensuring a secure and accurate connection within the vehicle's HVAC system. This switch-selector type component is specifically designed to regulate blower motor speeds, allowing for effective climate control inside the cabin. Its compatibility with multiple makes and models, including Chevrolet B-series trucks and Dodge Ram vans, makes it a versatile replacement part for HVAC system repairs.

Common Applications and Issues Addressed

  • Restores blower motor speed control in Chevrolet Blazer and GMC Bravada
  • Resolves intermittent or non-functioning blower operation in Dodge Ram vans
  • Fixes HVAC blower selector switch failures in Jeep TJ and Wrangler models
  • Eliminates issues with inconsistent airflow in Oldsmobile and Isuzu vehicles
  • Replaces worn or damaged blower control switches in Chevrolet S10 and Sonoma trucks

Installation Notes and Tips

  • Ensure vehicle ignition is off before beginning installation
  • Disconnect the battery to prevent electrical shorts
  • Verify connector orientation matches the rectangular male design
  • Check that all five terminals are properly seated for secure connection
  • Test blower operation after installation to confirm functionality

Quality Assurance and Warranty

The Four Seasons Selector Switch 37577 is manufactured to meet or exceed original equipment manufacturer standards, ensuring reliable performance and durability. This part undergoes rigorous quality control testing to maintain consistent operation within the HVAC system. Warranty coverage details should be confirmed with the product supplier or manufacturer.

BrandNGK
Part Number7100
PositionSelector Switch
Center Electrode Core MaterialCopper
Center Electrode Tip MaterialPlatinum
Electrical Terminal TypeNon-Removable Nut
Ground ConfigurationStandard
Ground Electrode Core MaterialNickel
Ground Electrode Quantity1
Ground Electrode Tip DesignTrapezoid
Hex Size5/8
Insulator Height50.50
Manufacturer Heat Range6
Part NumberZFR6FGP
Pre-Gap Size.040
Reach.75
Resistance5000
Seat TypeFlat
Stock Number7100
Thread Diameter14.00

This part fits 142 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2004JeepTJN/ASelector Switch
2004JeepTJN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2004JeepWranglerN/ASelector Switch
2004JeepWranglerN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2003ChevroletBlazerFrontBlower Motor Switch; w/ AC and Heater Blower; Selector Switch
2003ChevroletBlazerFrontw/ AC and Heater Blower; Selector Switch
2003DodgeRam 1500 Van3.9LV6N/ABlower Motor Switch; Module; Selector Switch
2003DodgeRam 1500 Van3.9LV6N/AModule; Selector Switch
2003DodgeRam 1500 Van5.2LV8N/ASelector Switch
2003DodgeRam 1500 Van5.2LV8N/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2003DodgeRam 1500 Van5.9LV8N/ASelector Switch
2003DodgeRam 1500 Van5.9LV8N/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2003DodgeRam 2500 VanN/ASelector Switch
2003DodgeRam 2500 VanN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2003DodgeRam 3500 VanN/ASelector Switch
2003DodgeRam 3500 VanN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2003GMCSonomaN/ASelector Switch
2003GMCSonomaN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2003JeepTJN/ASelector Switch
2003JeepTJN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2003JeepWranglerN/ASelector Switch
2003JeepWranglerN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2003OldsmobileBravadaN/ASelector Switch
2003OldsmobileBravadaN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2002ChevroletBlazerFrontBlower Motor Switch; w/ AC and Heater Blower; Selector Switch
2002ChevroletBlazerFrontw/ AC and Heater Blower; Selector Switch
2002ChevroletS10N/ASelector Switch
2002ChevroletS10N/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2002DodgeRam 1500 VanN/ASelector Switch
2002DodgeRam 1500 VanN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2002DodgeRam 2500 VanN/ASelector Switch
2002DodgeRam 2500 VanN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2002DodgeRam 3500 VanN/ASelector Switch
2002DodgeRam 3500 VanN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2002GMCSonomaN/ASelector Switch
2002GMCSonomaN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2002JeepTJN/ASelector Switch
2002JeepTJN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2002JeepWranglerN/ASelector Switch
2002JeepWranglerN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2002OldsmobileBravadaN/ASelector Switch
2002OldsmobileBravadaN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2001ChevroletBlazerFrontBlower Motor Switch; Module; Selector Switch
2001ChevroletBlazerFrontModule; Selector Switch
2001ChevroletS10N/ABlower Motor Switch; Module; Selector Switch
2001ChevroletS10N/AModule; Selector Switch
2001DodgeRam 1500 VanN/ABlower Motor Switch; Module; Selector Switch
2001DodgeRam 1500 VanN/AModule; Selector Switch
2001DodgeRam 2500 VanN/ASelector Switch
2001DodgeRam 2500 VanN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2001DodgeRam 3500 VanN/ASelector Switch
2001DodgeRam 3500 VanN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2001GMCJimmyN/ABlower Motor Switch; w/o ATC (Automatic Temperature Control); Selector Switch
2001GMCJimmyN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Selector Switch
2001GMCSonomaN/ASelector Switch
2001GMCSonomaN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2001JeepTJN/ASelector Switch
2001JeepTJN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2001JeepWranglerN/ASelector Switch
2001JeepWranglerN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2001OldsmobileBravadaN/ASelector Switch
2001OldsmobileBravadaN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2000ChevroletBlazerFrontBlower Motor Switch; w/ Auxiliary Blower; Selector Switch
2000ChevroletBlazerFrontw/ Auxiliary Blower; Selector Switch
2000ChevroletS10N/ASelector Switch
2000ChevroletS10N/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2000DodgeRam 1500 VanN/ABlower Motor Switch; Module; Selector Switch
2000DodgeRam 1500 VanN/AModule; Selector Switch
2000DodgeRam 2500 VanN/ASelector Switch
2000DodgeRam 2500 VanN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2000DodgeRam 3500 VanN/ASelector Switch
2000DodgeRam 3500 VanN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2000GMCJimmyN/ASelector Switch
2000GMCJimmyN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2000GMCSonomaN/ABlower Control Switch; with Air Conditioning; Selector Switch
2000GMCSonomaN/ACompatible with vehicles equipped with air conditioning.; Selector Switch
2000JeepTJN/ASelector Switch
2000JeepTJN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2000JeepWranglerN/ASelector Switch
2000JeepWranglerN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
2000OldsmobileBravadaN/ABlower Motor Switch; Federal Emissions; Selector Switch
2000OldsmobileBravadaN/AFederal Emissions; Selector Switch
1999ChevroletBlazerFrontBlower Motor Switch; Module; Selector Switch
1999ChevroletBlazerFrontModule; Selector Switch
1999ChevroletS10N/ASelector Switch
1999ChevroletS10N/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1999DodgeRam 1500 Van3.9LV6N/ABlower Motor Switch; Module; Selector Switch
1999DodgeRam 1500 Van3.9LV6N/AModule; Selector Switch
1999DodgeRam 1500 Van5.2LV8N/ASelector Switch
1999DodgeRam 1500 Van5.2LV8N/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1999DodgeRam 1500 Van5.9LV8N/ASelector Switch
1999DodgeRam 1500 Van5.9LV8N/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1999DodgeRam 2500 VanN/ASelector Switch
1999DodgeRam 2500 VanN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1999DodgeRam 3500 VanN/ASelector Switch
1999DodgeRam 3500 VanN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1999GMCJimmyN/ASelector Switch
1999GMCJimmyN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1999GMCSonomaN/ASelector Switch
1999GMCSonomaN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1999IsuzuHombreN/ASelector Switch
1999IsuzuHombreN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1999JeepTJN/ASelector Switch
1999JeepTJN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1999JeepWranglerN/ASelector Switch
1999JeepWranglerN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1999OldsmobileBravadaN/ABlower Motor Switch with Automatic Temperature Control (ATC); Selector Switch
1999OldsmobileBravadaN/ACompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Selector Switch
1998ChevroletBlazerFrontBlower Motor Switch; w/ AC and Heater Blower; Selector Switch
1998ChevroletBlazerFrontw/ AC and Heater Blower; Selector Switch
1998ChevroletS10N/ASelector Switch
1998ChevroletS10N/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1998DodgeB1500N/ASelector Switch
1998DodgeB1500N/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1998DodgeB2500N/ASelector Switch
1998DodgeB2500N/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1998DodgeB3500N/ASelector Switch
1998DodgeB3500N/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1998DodgeRam 1500 VanN/ABlower Control Switch; with Air Conditioning; Selector Switch
1998DodgeRam 1500 VanN/ACompatible with vehicles equipped with air conditioning.; Selector Switch
1998DodgeRam 2500 VanN/ABlower Motor Switch with Automatic Temperature Control (ATC); Selector Switch
1998DodgeRam 2500 VanN/ACompatible with HVAC systems featuring Automatic Temperature Control (ATC).; Selector Switch
1998DodgeRam 3500 VanN/ASelector Switch
1998DodgeRam 3500 VanN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1998GMCJimmyN/ABlower Motor Switch; w/ Digital Instrument Panel; Selector Switch
1998GMCJimmyN/Aw/ Digital Instrument Panel; Selector Switch
1998GMCSonomaN/ASelector Switch
1998GMCSonomaN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1998IsuzuHombre4.3LV6N/ABlower Control Switch; with Air Conditioning; Selector Switch
1998IsuzuHombre4.3LV6N/ACompatible with vehicles equipped with air conditioning.; Selector Switch
1998IsuzuHombre2.2LL4N/ASelector Switch
1998IsuzuHombre2.2LL4N/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1998JeepTJN/ASelector Switch
1998JeepTJN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1998JeepWranglerN/ASelector Switch
1998JeepWranglerN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1998OldsmobileBravadaN/ASelector Switch
1998OldsmobileBravadaN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1997JeepTJN/ASelector Switch
1997JeepTJN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch
1997JeepWranglerN/ASelector Switch
1997JeepWranglerN/APrior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch

* 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:

183318343644286719672167257100AP5224AP5405AP5405DP2FGR8LQP0FR7LPP30XRC12LC4RC12PMC4

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

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