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Four Seasons 37639 HVAC Blower Control Switch
Overview of Four Seasons Selector Switch 37639
The Four Seasons Selector Switch 37639 is a reliable HVAC blower control switch designed for select Chevrolet, GMC, Oldsmobile, and Pontiac vehicles. This switch features a male square connector with five terminals, ensuring precise control of your vehicle's blower system.
- Brand: Four Seasons
- Brand Line: Selector Switch
- Part Number: 37639
- Type: HVAC Blower Control Switch
- Connector Gender: Male
- Connector Shape: Square
- Number of Terminals: 5
- Compatible with Chevrolet, GMC, Oldsmobile, Pontiac models
Four Seasons Selector Switch Product Line
The Selector Switch line by Four Seasons focuses on providing dependable HVAC switches that regulate blower functions effectively. The 37639 model is part of this line, offering a durable and precise blower control switch that integrates seamlessly with the vehicle’s HVAC system for consistent performance.
Detailed Product Description
This HVAC blower control switch is engineered with a male square connector and five terminals, designed to fit specific vehicle models including Chevrolet Camaro, Caprice, S10, GMC S15 Jimmy, Oldsmobile Cutlass Calais, and Pontiac Firebird among others. The switch-selector/blower type ensures accurate blower speed selection and reliable operation within the HVAC system. Its construction supports stable electrical connections, reducing the risk of HVAC blower malfunctions.
Common Applications and Issues Addressed
- Restores blower control functionality in Chevrolet Camaro and GMC S10 Blazer
- Resolves intermittent blower speeds in Oldsmobile Cutlass Calais and Pontiac Firebird
- Fixes non-responsive HVAC blower switches in Chevrolet Caprice and S15 Jimmy
- Eliminates blower switch failure symptoms such as no airflow or stuck blower speeds
- Supports HVAC system repairs requiring a five-terminal blower control switch
Installation Notes and Tips
- Ensure vehicle compatibility with Chevrolet, GMC, Oldsmobile, or Pontiac models listed before installation
- Disconnect the battery before replacing the blower control switch to avoid electrical shorts
- Verify the male square connector aligns properly with the vehicle’s wiring harness
- Check all five terminals for secure connections to maintain proper blower function
- Consult vehicle service manual for specific removal and installation procedures
Quality Assurance and Warranty
Four Seasons maintains strict quality control standards for the Selector Switch line, including part number 37639. This HVAC blower control switch is manufactured to meet or exceed OEM specifications for fit and function. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.
| Brand | NGK |
| Part Number | 96355 |
| Position | Selector Switch |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Ruthenium |
| Electrical Terminal Type | Non-Removable Nut |
| Ground Configuration | Standard |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Dual Fine Electrode - High Ignitability |
| Hex Size | 5/8 |
| Insulator Height | 50.50 |
| Manufacturer Heat Range | 5 |
| Part Number | LFR5AHX |
| Pre-Gap Size | .044 |
| Reach | 26.5 |
| Resistance | 5000 |
| Seat Type | Flat |
| Stock Number | 96355 |
| Thread Diameter | 14.00 |
This part fits 97 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1992 | Chevrolet | Camaro | N/A | Selector Switch |
| 1992 | Chevrolet | Camaro | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1992 | Pontiac | Firebird | N/A | Selector Switch |
| 1992 | Pontiac | Firebird | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1991 | Chevrolet | Camaro | N/A | Selector Switch |
| 1991 | Chevrolet | Camaro | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1991 | Oldsmobile | Delta 88 | N/A | Selector Switch |
| 1991 | Oldsmobile | Delta 88 | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1991 | Pontiac | Firebird | N/A | Selector Switch |
| 1991 | Pontiac | Firebird | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1990 | Chevrolet | Camaro | N/A | Selector Switch |
| 1990 | Chevrolet | Camaro | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1990 | Chevrolet | Caprice | N/A | Selector Switch |
| 1990 | Chevrolet | Caprice | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1990 | Oldsmobile | Delta 88 | N/A | Selector Switch |
| 1990 | Oldsmobile | Delta 88 | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1990 | Pontiac | Firebird | N/A | Selector Switch |
| 1990 | Pontiac | Firebird | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1989 | Chevrolet | Camaro | N/A | Selector Switch |
| 1989 | Chevrolet | Camaro | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1989 | Chevrolet | Caprice | N/A | Selector Switch |
| 1989 | Chevrolet | Caprice | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1989 | Oldsmobile | Delta 88 | N/A | Selector Switch |
| 1989 | Oldsmobile | Delta 88 | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1989 | Pontiac | Firebird | N/A | Selector Switch |
| 1989 | Pontiac | Firebird | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1988 | Chevrolet | Camaro | N/A | Selector Switch |
| 1988 | Chevrolet | Camaro | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1988 | Chevrolet | Caprice | N/A | Selector Switch |
| 1988 | Chevrolet | Caprice | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1988 | Oldsmobile | Cutlass Calais | N/A | Selector Switch |
| 1988 | Oldsmobile | Cutlass Calais | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1988 | Pontiac | Fiero | N/A | Selector Switch |
| 1988 | Pontiac | Fiero | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1988 | Pontiac | Firebird | N/A | Selector Switch |
| 1988 | Pontiac | Firebird | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1987 | Chevrolet | Camaro | N/A | Selector Switch |
| 1987 | Chevrolet | Camaro | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1987 | Oldsmobile | Calais | N/A | Selector Switch |
| 1987 | Oldsmobile | Calais | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1987 | Pontiac | Fiero | N/A | Selector Switch |
| 1987 | Pontiac | Fiero | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1987 | Pontiac | Firebird | N/A | Selector Switch |
| 1987 | Pontiac | Firebird | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1986 | Chevrolet | Camaro | N/A | Selector Switch |
| 1986 | Chevrolet | Camaro | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1986 | Oldsmobile | Calais | N/A | Selector Switch |
| 1986 | Oldsmobile | Calais | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1986 | Pontiac | Fiero | N/A | Selector Switch |
| 1986 | Pontiac | Fiero | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1986 | Pontiac | Firebird | N/A | Selector Switch |
| 1986 | Pontiac | Firebird | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1985 | Chevrolet | Camaro | N/A | Selector Switch |
| 1985 | Chevrolet | Camaro | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1985 | Chevrolet | Citation II | N/A | Selector Switch |
| 1985 | Chevrolet | Citation II | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1985 | Chevrolet | S10 | N/A | Selector Switch |
| 1985 | Chevrolet | S10 | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1985 | Chevrolet | S10 Blazer | N/A | Selector Switch |
| 1985 | Chevrolet | S10 Blazer | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1985 | GMC | S15 | N/A | Selector Switch |
| 1985 | GMC | S15 | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1985 | GMC | S15 Jimmy | N/A | Blower Motor Switch; Selector Switch |
| 1985 | Oldsmobile | Calais | N/A | Selector Switch |
| 1985 | Oldsmobile | Calais | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1985 | Pontiac | Firebird | N/A | Selector Switch |
| 1985 | Pontiac | Firebird | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1984 | Chevrolet | Camaro | N/A | Selector Switch |
| 1984 | Chevrolet | Camaro | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1984 | Chevrolet | S10 | N/A | Selector Switch |
| 1984 | Chevrolet | S10 | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1984 | Chevrolet | S10 Blazer | N/A | Selector Switch |
| 1984 | Chevrolet | S10 Blazer | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1984 | GMC | S15 | N/A | Selector Switch |
| 1984 | GMC | S15 | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1984 | GMC | S15 Jimmy | N/A | Blower Motor Switch; Selector Switch |
| 1984 | Pontiac | Firebird | N/A | Selector Switch |
| 1984 | Pontiac | Firebird | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1983 | Chevrolet | Camaro | N/A | Selector Switch |
| 1983 | Chevrolet | Camaro | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1983 | Chevrolet | S10 | N/A | Selector Switch |
| 1983 | Chevrolet | S10 | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1983 | Chevrolet | S10 Blazer | N/A | Selector Switch |
| 1983 | Chevrolet | S10 Blazer | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1983 | GMC | S15 | N/A | Selector Switch |
| 1983 | GMC | S15 | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1983 | GMC | S15 Jimmy | N/A | Blower Motor Switch; Selector Switch |
| 1983 | Pontiac | Firebird | N/A | Selector Switch |
| 1983 | Pontiac | Firebird | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1982 | Chevrolet | Camaro | N/A | Selector Switch |
| 1982 | Chevrolet | Camaro | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1982 | Chevrolet | S10 | N/A | Selector Switch |
| 1982 | Chevrolet | S10 | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1982 | GMC | S15 | N/A | Selector Switch |
| 1982 | GMC | S15 | N/A | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1982 | Pontiac | Firebird | N/A | Selector Switch |
| 1982 | Pontiac | Firebird | N/A | Prior 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.