Four Seasons 36664 A/C Clutch Cycle Switch
Four Seasons 36664 A/C Clutch Cycle Switch
The Four Seasons Pressure Switch line includes this A/C clutch cycle switch for system-mounted HVAC control. Part number 36664 is a 12-volt, two-terminal pressure switch with a round connector, black housing, and Weather Pack protection for service in demanding underhood conditions.
Key Features
- Four Seasons Pressure Switch line, part number 36664
- A/C clutch cycle switch with system mount design
- 12-volt operation with 2 male pin terminals
- Round connector shape and female 7/16 in. x 20 fitting thread
- Black plastic and metal construction
- Weather Pack sealed connection
- Meets or exceeds OEM requirements
- Cycling style with low-off at 30 psi and low-on at 49 psi
Product Details
This pressure switch is built for R12 refrigerant air conditioning compressor cut-out applications and is listed across a wide range of GM trucks and SUVs, including Chevrolet Blazer, C1500, K1500, and GMC Jimmy, Yukon, and related Suburban models. It is also referenced for Buick Regal and select 1992 minivan applications such as Chevrolet Lumina APV, Oldsmobile Silhouette, and Pontiac Trans Sport. The Four Seasons 36664 is a direct-fit style HVAC switch for vehicles that require a cycling pressure control point in the A/C system.
This part cross-references UAC SW9938C and Hayden 5039 for the same application.
Common Issues This Part Addresses
- A/C compressor cycling too frequently or not cycling at the correct pressure
- Compressor cut-out behavior caused by a failed pressure switch
- Loss of cabin cooling from incorrect system pressure signal
- Intermittent A/C operation related to worn switch contacts or connector issues
- HVAC control faults on R12 refrigerant systems
Installation Notes and Tips
Verify the fitting thread size, connector shape, terminal style, and pressure settings before installation. This switch uses a female 7/16 in. x 20 thread, a round connector, and male pin terminals, so matching the original HVAC connector and mounting location is important. Confirm refrigerant system requirements and vehicle application details for Chevrolet C1500, GMC K2500, and similar GM platforms before replacing the original part.
Quality Assurance
Four Seasons lists this pressure switch as meeting or exceeding OEM requirements. The 36664 part number is supported by multiple interchange references, which helps confirm application matching for service work on 1989-1993 Chevrolet and GMC trucks and SUVs.
Four Seasons 36664 A/C Clutch Cycle Switch
Four Seasons 36664 A/C Clutch Cycle Switch
The Four Seasons Pressure Switch line includes this A/C clutch cycle switch for system-mounted HVAC control. Part number 36664 is a 12-volt, two-terminal pressure switch with a round connector, black housing, and Weather Pack protection for service in demanding underhood conditions.
Key Features
- Four Seasons Pressure Switch line, part number 36664
- A/C clutch cycle switch with system mount design
- 12-volt operation with 2 male pin terminals
- Round connector shape and female 7/16 in. x 20 fitting thread
- Black plastic and metal construction
- Weather Pack sealed connection
- Meets or exceeds OEM requirements
- Cycling style with low-off at 30 psi and low-on at 49 psi
Product Details
This pressure switch is built for R12 refrigerant air conditioning compressor cut-out applications and is listed across a wide range of GM trucks and SUVs, including Chevrolet Blazer, C1500, K1500, and GMC Jimmy, Yukon, and related Suburban models. It is also referenced for Buick Regal and select 1992 minivan applications such as Chevrolet Lumina APV, Oldsmobile Silhouette, and Pontiac Trans Sport. The Four Seasons 36664 is a direct-fit style HVAC switch for vehicles that require a cycling pressure control point in the A/C system.
This part cross-references UAC SW9938C and Hayden 5039 for the same application.
Common Issues This Part Addresses
- A/C compressor cycling too frequently or not cycling at the correct pressure
- Compressor cut-out behavior caused by a failed pressure switch
- Loss of cabin cooling from incorrect system pressure signal
- Intermittent A/C operation related to worn switch contacts or connector issues
- HVAC control faults on R12 refrigerant systems
Installation Notes and Tips
Verify the fitting thread size, connector shape, terminal style, and pressure settings before installation. This switch uses a female 7/16 in. x 20 thread, a round connector, and male pin terminals, so matching the original HVAC connector and mounting location is important. Confirm refrigerant system requirements and vehicle application details for Chevrolet C1500, GMC K2500, and similar GM platforms before replacing the original part.
Quality Assurance
Four Seasons lists this pressure switch as meeting or exceeding OEM requirements. The 36664 part number is supported by multiple interchange references, which helps confirm application matching for service work on 1989-1993 Chevrolet and GMC trucks and SUVs.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Four Seasons 36664 A/C Clutch Cycle Switch
The Four Seasons Pressure Switch line includes this A/C clutch cycle switch for system-mounted HVAC control. Part number 36664 is a 12-volt, two-terminal pressure switch with a round connector, black housing, and Weather Pack protection for service in demanding underhood conditions.
Key Features
- Four Seasons Pressure Switch line, part number 36664
- A/C clutch cycle switch with system mount design
- 12-volt operation with 2 male pin terminals
- Round connector shape and female 7/16 in. x 20 fitting thread
- Black plastic and metal construction
- Weather Pack sealed connection
- Meets or exceeds OEM requirements
- Cycling style with low-off at 30 psi and low-on at 49 psi
Product Details
This pressure switch is built for R12 refrigerant air conditioning compressor cut-out applications and is listed across a wide range of GM trucks and SUVs, including Chevrolet Blazer, C1500, K1500, and GMC Jimmy, Yukon, and related Suburban models. It is also referenced for Buick Regal and select 1992 minivan applications such as Chevrolet Lumina APV, Oldsmobile Silhouette, and Pontiac Trans Sport. The Four Seasons 36664 is a direct-fit style HVAC switch for vehicles that require a cycling pressure control point in the A/C system.
This part cross-references UAC SW9938C and Hayden 5039 for the same application.
Common Issues This Part Addresses
- A/C compressor cycling too frequently or not cycling at the correct pressure
- Compressor cut-out behavior caused by a failed pressure switch
- Loss of cabin cooling from incorrect system pressure signal
- Intermittent A/C operation related to worn switch contacts or connector issues
- HVAC control faults on R12 refrigerant systems
Installation Notes and Tips
Verify the fitting thread size, connector shape, terminal style, and pressure settings before installation. This switch uses a female 7/16 in. x 20 thread, a round connector, and male pin terminals, so matching the original HVAC connector and mounting location is important. Confirm refrigerant system requirements and vehicle application details for Chevrolet C1500, GMC K2500, and similar GM platforms before replacing the original part.
Quality Assurance
Four Seasons lists this pressure switch as meeting or exceeding OEM requirements. The 36664 part number is supported by multiple interchange references, which helps confirm application matching for service work on 1989-1993 Chevrolet and GMC trucks and SUVs.
