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SKFPart #: 17459
Four Seasons 37641 HVAC Blower Control Switch - Rear
189 vehicles fit this part
Select your vehicle to confirm fitment
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Selector Switch
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Not what you need? See all HVAC Blower Control Switch options
HVAC Blower Control Switch for Rear Systems
Four Seasons 37641 is a selector-style HVAC blower control switch for rear climate control applications. It uses a male square connector with 4 terminals and is built for blower selector operation in vehicles equipped with rear AC or rear HVAC controls.
Compatible With Chevrolet G10, Chevrolet G20, Chevrolet G30, GMC G1500, GMC G2500, and GMC G3500 rear HVAC applications, this switch is a direct-fit service part for restoring blower speed selection. Four Seasons Selector Switch 37641 is also referenced by common interchange numbers for the same application.
Key Features
- Four Seasons Selector Switch line
- HVAC blower control switch for rear climate systems
- Male connector with square housing
- 4-terminal electrical connection
- Selector switch / blower switch design
- Fits rear-position HVAC applications and auxiliary unit setups listed below
Detailed Description
Four Seasons 37641 is an HVAC blower control switch used to select fan speeds in rear climate control systems. The switch configuration includes a male, square connector and 4 terminals, matching the electrical layout used in the listed Chevrolet and GMC rear HVAC applications. This part number is commonly searched as Four Seasons 37641 and 37641 HVAC blower control switch.
The Selector Switch product line is focused on service replacement for blower and selector functions in vehicle climate systems. For buyers searching by vehicle, this part is associated with Chevrolet G10, G20, and G30 rear HVAC applications, as well as GMC G1500, G2500, and G3500 rear systems. It also appears in rear blower motor switch and auxiliary unit listings for select Chevrolet and GMC models.
This part cross-references 1S8179 and SW5688 for the same application.
What It Helps Fix
- Inoperative rear blower speed selection
- Intermittent HVAC fan control at the rear unit
- Blower switch failure causing no fan response
- Worn electrical contacts in the selector switch
- Loss of control over rear AC blower operation
Installation Notes and Tips
- Verify connector shape, terminal count, and mounting location before installation.
- Match the vehicle year, make, model, and rear HVAC configuration to the fitment list.
- Inspect the connector and wiring for heat damage or corrosion before replacing the switch.
- Confirm the existing control is a blower selector switch, not a different HVAC control component.
Quality Assurance
Four Seasons is a recognized aftermarket brand for HVAC service parts, and this selector switch is cataloged for the specific rear blower control applications listed above. Confirm fitment for your Chevrolet or GMC rear HVAC system before purchase.
This part fits 189 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1995 | Chevrolet | G10 | Rear | Selector Switch |
| 1995 | Chevrolet | G10 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1995 | Chevrolet | G20 | Rear | Selector Switch |
| 1995 | Chevrolet | G20 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1995 | Chevrolet | G30 | Rear | Selector Switch |
| 1995 | Chevrolet | G30 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1995 | GMC | G1500 | Rear | Selector Switch |
| 1995 | GMC | G1500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1995 | GMC | G2500 | Rear | Selector Switch |
| 1995 | GMC | G2500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1995 | GMC | G3500 | Rear | Selector Switch |
| 1995 | GMC | G3500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1994 | Chevrolet | G10 | Rear | Selector Switch |
| 1994 | Chevrolet | G10 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1994 | Chevrolet | G20 | Rear | Selector Switch |
| 1994 | Chevrolet | G20 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1994 | Chevrolet | G30 | Rear | Selector Switch |
| 1994 | Chevrolet | G30 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1994 | GMC | G1500 | Rear | Selector Switch |
| 1994 | GMC | G1500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1994 | GMC | G2500 | Rear | Selector Switch |
| 1994 | GMC | G2500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1994 | GMC | G3500 | Rear | Selector Switch |
| 1994 | GMC | G3500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1993 | Chevrolet | G10 | Rear | Selector Switch |
| 1993 | Chevrolet | G10 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1993 | Chevrolet | G20 | Rear | Selector Switch |
| 1993 | Chevrolet | G20 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1993 | Chevrolet | G30 | Rear | Selector Switch |
| 1993 | Chevrolet | G30 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1993 | GMC | G1500 | Rear | Selector Switch |
| 1993 | GMC | G1500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1993 | GMC | G2500 | Rear | Selector Switch |
| 1993 | GMC | G2500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1993 | GMC | G3500 | Rear | Selector Switch |
| 1993 | GMC | G3500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1992 | Chevrolet | G10 | Rear | Selector Switch |
| 1992 | Chevrolet | G10 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1992 | Chevrolet | G20 | Rear | Selector Switch |
| 1992 | Chevrolet | G20 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1992 | Chevrolet | G30 | Rear | Selector Switch |
| 1992 | Chevrolet | G30 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1992 | GMC | G1500 | Rear | Selector Switch |
| 1992 | GMC | G1500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1992 | GMC | G2500 | Rear | Selector Switch |
| 1992 | GMC | G2500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1992 | GMC | G3500 | Rear | Selector Switch |
| 1992 | GMC | G3500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1991 | Chevrolet | G10 | Rear | Selector Switch |
| 1991 | Chevrolet | G10 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1991 | Chevrolet | G20 | Rear | Selector Switch |
| 1991 | Chevrolet | G20 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1991 | Chevrolet | G30 | Rear | Selector Switch |
| 1991 | Chevrolet | G30 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1991 | GMC | G1500 | Rear | Selector Switch |
| 1991 | GMC | G1500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1991 | GMC | G2500 | Rear | Selector Switch |
| 1991 | GMC | G2500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1991 | GMC | G3500 | Rear | Selector Switch |
| 1991 | GMC | G3500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1990 | Chevrolet | G10 | Rear | Selector Switch |
| 1990 | Chevrolet | G10 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1990 | Chevrolet | G20 | Rear | Selector Switch |
| 1990 | Chevrolet | G20 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1990 | Chevrolet | G30 | Rear | Selector Switch |
| 1990 | Chevrolet | G30 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1990 | GMC | G1500 | Rear | Selector Switch |
| 1990 | GMC | G1500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1990 | GMC | G2500 | Rear | Selector Switch |
| 1990 | GMC | G2500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1990 | GMC | G3500 | Rear | Selector Switch |
| 1990 | GMC | G3500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1989 | Chevrolet | G10 | Rear | Selector Switch |
| 1989 | Chevrolet | G10 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1989 | Chevrolet | G20 | Rear | Selector Switch |
| 1989 | Chevrolet | G20 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1989 | Chevrolet | G30 | Rear | Selector Switch |
| 1989 | Chevrolet | G30 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1989 | GMC | G1500 | Rear | Selector Switch |
| 1989 | GMC | G1500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1989 | GMC | G2500 | Rear | Selector Switch |
| 1989 | GMC | G2500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1989 | GMC | G3500 | Rear | Selector Switch |
| 1989 | GMC | G3500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1988 | Chevrolet | G10 | Rear | Selector Switch |
| 1988 | Chevrolet | G10 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1988 | Chevrolet | G20 | Rear | Selector Switch |
| 1988 | Chevrolet | G20 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1988 | Chevrolet | G30 | Rear | Selector Switch |
| 1988 | Chevrolet | G30 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1988 | GMC | G1500 | Rear | Selector Switch |
| 1988 | GMC | G1500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1988 | GMC | G2500 | Rear | Selector Switch |
| 1988 | GMC | G2500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1988 | GMC | G3500 | Rear | Selector Switch |
| 1988 | GMC | G3500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1987 | Chevrolet | G10 | Rear | Selector Switch |
| 1987 | Chevrolet | G10 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1987 | Chevrolet | G20 | Rear | Selector Switch |
| 1987 | Chevrolet | G20 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1987 | Chevrolet | G30 | Rear | Selector Switch |
| 1987 | Chevrolet | G30 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1987 | GMC | G1500 | Rear | Selector Switch |
| 1987 | GMC | G1500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1987 | GMC | G2500 | Rear | Selector Switch |
| 1987 | GMC | G2500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1987 | GMC | G3500 | Rear | Selector Switch |
| 1987 | GMC | G3500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1986 | Chevrolet | G10 | Rear | Selector Switch |
| 1986 | Chevrolet | G10 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1986 | Chevrolet | G20 | Rear | Selector Switch |
| 1986 | Chevrolet | G20 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1986 | Chevrolet | G30 | Rear | Selector Switch |
| 1986 | Chevrolet | G30 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1986 | GMC | G1500 | Rear | Selector Switch |
| 1986 | GMC | G1500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1986 | GMC | G2500 | Rear | Selector Switch |
| 1986 | GMC | G2500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1986 | GMC | G3500 | Rear | Selector Switch |
| 1986 | GMC | G3500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1985 | Chevrolet | G10 | Rear | Selector Switch |
| 1985 | Chevrolet | G10 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1985 | Chevrolet | G20 | Rear | Selector Switch |
| 1985 | Chevrolet | G20 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1985 | Chevrolet | G30 | Rear | Selector Switch |
| 1985 | Chevrolet | G30 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1985 | GMC | G1500 | Rear | Selector Switch |
| 1985 | GMC | G1500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1985 | GMC | G2500 | Rear | Selector Switch |
| 1985 | GMC | G2500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1985 | GMC | G3500 | Rear | Selector Switch |
| 1985 | GMC | G3500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1984 | Chevrolet | G10 | Rear | Selector Switch |
| 1984 | Chevrolet | G10 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1984 | Chevrolet | G20 | Rear | Selector Switch |
| 1984 | Chevrolet | G20 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1984 | Chevrolet | G30 | Rear | Selector Switch |
| 1984 | Chevrolet | G30 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1984 | GMC | G1500 | Rear | Selector Switch |
| 1984 | GMC | G1500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1984 | GMC | G2500 | Rear | Selector Switch |
| 1984 | GMC | G2500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1984 | GMC | G3500 | Rear | Selector Switch |
| 1984 | GMC | G3500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1983 | Chevrolet | G10 | Rear | Selector Switch |
| 1983 | Chevrolet | G10 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1983 | Chevrolet | G20 | Rear | Selector Switch |
| 1983 | Chevrolet | G20 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1983 | Chevrolet | G30 | Rear | Selector Switch |
| 1983 | Chevrolet | G30 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1983 | GMC | G1500 | Rear | Selector Switch |
| 1983 | GMC | G1500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1983 | GMC | G2500 | Rear | Selector Switch |
| 1983 | GMC | G2500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1983 | GMC | G3500 | Rear | Selector Switch |
| 1983 | GMC | G3500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1982 | Chevrolet | G10 | Rear | Selector Switch |
| 1982 | Chevrolet | G10 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1982 | Chevrolet | G20 | Rear | Selector Switch |
| 1982 | Chevrolet | G20 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1982 | Chevrolet | G30 | Rear | Selector Switch |
| 1982 | Chevrolet | G30 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1982 | GMC | G1500 | Rear | Selector Switch |
| 1982 | GMC | G1500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1982 | GMC | G2500 | Rear | Selector Switch |
| 1982 | GMC | G2500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1982 | GMC | G3500 | Rear | Selector Switch |
| 1982 | GMC | G3500 | Rear | Prior to purchase, ensure compatibility with vehicle's make, model, and year for HVAC Blower Control Switch.; Selector Switch |
| 1978 | Chevrolet | C10 Suburban | Rear | Blower Motor Switch; Selector Switch |
| 1978 | Chevrolet | C20 Suburban | Rear | Blower Motor Switch; Selector Switch |
| 1978 | Chevrolet | G10 | N/A | Auxiliary Unit; Selector Switch |
| 1978 | Chevrolet | G20 | N/A | Auxiliary Unit; Selector Switch |
| 1978 | Chevrolet | G30 | N/A | Auxiliary Unit; Selector Switch |
| 1978 | Chevrolet | K10 Suburban | Rear | Blower Motor Switch; Selector Switch |
| 1978 | Chevrolet | K20 Suburban | Rear | Blower Motor Switch; Selector Switch |
| 1978 | GMC | Jimmy | N/A | Vehicle w/ Rear AC; Selector Switch |
| 1977 | Chevrolet | G10 | N/A | Auxiliary Unit; Selector Switch |
| 1977 | Chevrolet | G20 | N/A | Auxiliary Unit; Selector Switch |
| 1977 | Chevrolet | G30 | N/A | Auxiliary Unit; Selector Switch |
| 1977 | GMC | Jimmy | N/A | Vehicle w/ Rear AC; Selector Switch |
| 1976 | Chevrolet | G10 | N/A | Auxiliary Unit; Selector Switch |
| 1976 | Chevrolet | G20 | N/A | Auxiliary Unit; Selector Switch |
| 1976 | Chevrolet | G30 | N/A | Auxiliary Unit; Selector Switch |
| 1976 | GMC | Jimmy | N/A | Vehicle w/ Rear AC; Selector Switch |
| 1975 | Chevrolet | G10 | N/A | Auxiliary Unit; Selector Switch |
| 1975 | Chevrolet | G20 | N/A | Auxiliary Unit; Selector Switch |
| 1975 | Chevrolet | G30 | N/A | Auxiliary Unit; Selector Switch |
| 1975 | GMC | Jimmy | N/A | Vehicle w/ Rear AC; Selector Switch |
| 1974 | GMC | Jimmy | N/A | Vehicle w/ Rear AC; Selector Switch |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.