Four Seasons
Pressure Switch

Four Seasons 36664 A/C Clutch Cycle Switch

Brand Four Seasons 36664
Color Black
Connector Shape Round
Description Switch-pressure /system mount
Fitting Gender Female
Fitting Thread Size 7/16 in. x 20
Item Included A Desc 24650
Item Included A Qty. 1
Material Plastic / metal
Meets / Exceeds OEM? Yes
Mnt Sys Loc System mount
Number of Terminals 2
Open (at 0 psi.)? Yes
Operate Psi Low Off 30
Operate Psi Low On 49
Style Cycling
Terminal Gender Male
Terminal Type Pin
Type Pressure
Voltage 12
Weather Pack? Yes
Product line Pressure Switch
Fits Buick, Chevrolet, GMC, Oldsmobile, and Pontiac · 159 vehicles

OE-spec replacement. Meets or exceeds OEM requirements for dependable system control.

Cycling pressure switch. Helps regulate pressure with automatic on-off operation.

Weather-pack sealed. Built with a sealed connector for added protection.

Cross-references Anchor 3205, FEL-PRO 1413 and FEL-PRO 1423 for the same application. See all 54.

$18.59Free shipping
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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.

This part fits 159 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeLitersCylindersNotes
1993BuickRegalSedan3.8LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1993BuickRegalCoupe3.8LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1993BuickRegalSedan3.1LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1993BuickRegalCoupe3.1LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1993ChevroletBlazer———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993ChevroletC1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993ChevroletC1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993ChevroletC2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993ChevroletC2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993ChevroletC35———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993ChevroletC3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993ChevroletC3500HD———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993ChevroletK1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993ChevroletK1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993ChevroletK2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993ChevroletK2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993ChevroletK3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993ChevroletSuburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993GMCC1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993GMCC1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993GMCC2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993GMCC2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993GMCC3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993GMCC3500HD———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993GMCK1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993GMCK1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993GMCK2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993GMCK2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993GMCK3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1993GMCYukon———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992BuickRegalSedan3.8LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1992BuickRegalCoupe3.8LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1992BuickRegalSedan3.1LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1992BuickRegalCoupe3.1LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1992ChevroletBlazer———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992ChevroletC1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992ChevroletC1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992ChevroletC2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992ChevroletC2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992ChevroletC35———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992ChevroletC3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992ChevroletC3500HD———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992ChevroletK1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992ChevroletK1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992ChevroletK2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992ChevroletK2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992ChevroletK3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992ChevroletLumina APV———Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1992ChevroletSuburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992GMCC1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992GMCC1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992GMCC2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992GMCC2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992GMCC3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992GMCC3500HD———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992GMCK1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992GMCK1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992GMCK2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992GMCK2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992GMCK3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992GMCYukon———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1992OldsmobileSilhouette———Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1992PontiacTrans Sport———Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1991BuickRegalSedan3.8LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1991BuickRegalCoupe3.8LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1991BuickRegalSedan3.1LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1991BuickRegalCoupe3.1LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1991ChevroletBlazer———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletC1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletC2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletC35———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletC3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletC3500HD———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletK1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletK2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletK3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletR1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletR2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletR3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletSuburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletV1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletV2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991ChevroletV3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991GMCC1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991GMCC2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991GMCC3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991GMCC3500HD———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991GMCJimmy———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991GMCK1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991GMCK2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991GMCK3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991GMCR1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991GMCR2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991GMCR3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991GMCV1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991GMCV2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1991GMCV3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990BuickRegalSedan3.8LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1990BuickRegalCoupe3.8LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1990BuickRegalSedan3.1LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1990BuickRegalCoupe3.1LV6Fitment Note: Compatible with various models and years, verify compatibility with your vehicle before purchasing.; Pressure Switch
1990ChevroletBlazer———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990ChevroletC1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990ChevroletC2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990ChevroletC35———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990ChevroletC3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990ChevroletK1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990ChevroletK2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990ChevroletK3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990ChevroletR1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990ChevroletR2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990ChevroletR3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990ChevroletSuburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990ChevroletV1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990ChevroletV2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990ChevroletV3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990GMCC1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990GMCC2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990GMCC3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990GMCJimmy———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990GMCK1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990GMCK2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990GMCK3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990GMCR1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990GMCR2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990GMCR3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990GMCV1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990GMCV2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1990GMCV3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletBlazer———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletC1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletC2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletC35———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletC3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletK1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletK2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletK3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletR1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletR2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletR2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletR3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletSuburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletV1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletV2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989ChevroletV3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989GMCC1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989GMCC2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989GMCC3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989GMCJimmy———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989GMCK1500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989GMCK2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989GMCK3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989GMCR1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989GMCR2500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989GMCR2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989GMCR3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989GMCV1500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989GMCV2500 Suburban———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
1989GMCV3500———Compatible with R12 refrigerant air conditioning compressor cut-out switch.; Pressure Switch
Directly replaces or cross-references 54 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 3205FEL-PRO — 1413FEL-PRO — 1423FEL-PRO — 1424Four Seasons — 33990Four Seasons — 36664Four Seasons — 57521Gates — 22816Global Parts Distributors LLC — 1711431Hayden — 5039National — 711066UAC — SW9938C142120908209118520211021511021615262815263915264720741420743920746821158521258540409370181670746801478028171159122100022299022293003330966057136664111209081112091111136664V5245143652451437524514405245785352457854A8385AC8341ACD152647B404093E807322HS585MT0204SW1132SW2647SW2647C