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Part #: ES2012S

Four Seasons 36668 HVAC Cut-Off Switch

Pressure Switch
⚙️ 66 vehicles fit this part
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📦Pressure Switch
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Overview of Four Seasons Pressure Switch 36668

The Four Seasons Pressure Switch 36668 is a system-mounted HVAC cut-off switch designed for select Buick, Cadillac, and Oldsmobile models. This black, low cut-out pressure switch ensures reliable operation within your vehicle's HVAC system by monitoring pressure and controlling system activation.

  • Compatible with Buick Brougham, Cadillac DeVille, Eldorado, Fleetwood, Reatta, Riviera, Seville, Toronado, and Oldsmobile Commercial Chassis
  • Part number 36668 for precise identification and fitment
  • Pressure switch style with low cut-out type for system protection
  • Black color with a round male connector and female fitting
  • Fitting thread size of 7/16 in. x 20 for secure installation
  • Two terminals and system-mounted location for optimal performance
  • Meets or exceeds OEM specifications for quality assurance

Four Seasons Pressure Switch Product Line Details

The Four Seasons Pressure Switch product line focuses on pressure-based HVAC switches that regulate system operation by monitoring refrigerant pressure. The 36668 model is part of this line, offering a low cut-out function to prevent system damage by shutting off the compressor when pressure falls below a set threshold. This ensures the HVAC system operates within safe parameters, maintaining vehicle comfort and component longevity.

Detailed Product Description

This HVAC cut-off switch features a black housing with a round male connector designed to interface with harness connector 37227. The female fitting with a 7/16 in. x 20 thread size allows for secure system mounting. The switch operates in an open state when the compressor is off, activating when pressure conditions are met. With two terminals, it integrates seamlessly into the vehicle's HVAC system. The Four Seasons 36668 pressure switch is engineered to meet or exceed OEM standards, providing dependable performance for Buick, Cadillac, and Oldsmobile vehicles.

Common Applications and Issues Addressed

  • Prevents compressor damage due to low refrigerant pressure
  • Ensures proper HVAC system cycling in Buick Brougham and Cadillac DeVille models
  • Maintains system safety in Oldsmobile Commercial Chassis and Cadillac Eldorado
  • Helps avoid HVAC system shutdowns caused by pressure irregularities
  • Supports consistent climate control operation in Cadillac Fleetwood and Riviera

Installation Notes and Tips

  • Verify compatibility with your specific Buick, Cadillac, or Oldsmobile model before installation
  • Ensure the system is depressurized and the vehicle is off before replacing the pressure switch
  • Use the correct thread size (7/16 in. x 20) to avoid leaks or improper fit
  • Connect to harness connector 37227 for proper electrical integration
  • Check for secure mounting in the system location to prevent vibration damage

Quality Assurance and Warranty

The Four Seasons Pressure Switch 36668 meets or exceeds OEM specifications, ensuring reliable performance and durability. This part is manufactured to strict quality standards to provide consistent operation within the HVAC system. Warranty coverage details should be confirmed with the original equipment manufacturer or supplier.

BrandMoog
Part NumberES2012S
PositionPressure Switch
Length5.5

This part fits 66 vehicles. Search below:

YearMakeModelSubmodelPositionNotes
1993BuickRivieraN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1993CadillacCommercial ChassisBroughamN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1993CadillacDeVilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1993CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1993CadillacFleetwoodN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1993CadillacSevilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1992BuickRivieraN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1992CadillacBroughamN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1992CadillacCommercial ChassisBroughamN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1992CadillacDeVilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1992CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1992CadillacFleetwoodN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1992CadillacSevilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1992OldsmobileToronadoN/ALow Pressure A/C System Mounted Liquid Line - HVAC Cut-Off Switch; Pressure Switch
1991BuickReattaN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1991BuickRivieraN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1991CadillacBroughamN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1991CadillacDeVilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1991CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1991CadillacFleetwoodN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1991CadillacSevilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1991OldsmobileToronadoN/ALow Pressure A/C System Mounted Liquid Line - HVAC Cut-Off Switch; Pressure Switch
1990BuickReattaN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1990BuickRivieraN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1990CadillacBroughamN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1990CadillacCommercial ChassisN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1990CadillacDeVilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1990CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1990CadillacFleetwoodN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1990CadillacSevilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1990OldsmobileToronadoN/ALow Pressure A/C System Mounted Liquid Line - HVAC Cut-Off Switch; Pressure Switch
1989BuickReattaN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989BuickRivieraN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989CadillacBroughamN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989CadillacCommercial ChassisN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989CadillacDeVilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989CadillacFleetwoodN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989CadillacFleetwoodBaseN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989CadillacFleetwoodd'EleganceN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989CadillacFleetwood60 SpecialN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989CadillacFleetwoodBrougham Commercial ChassisN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989CadillacSevilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1989OldsmobileToronadoN/ALow Pressure A/C System Mounted Liquid Line - HVAC Cut-Off Switch; Pressure Switch
1988BuickReattaN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1988BuickRivieraN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1988CadillacBroughamN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1988CadillacDeVilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1988CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1988CadillacFleetwoodN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1988CadillacSevilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1988OldsmobileToronadoN/ALow Pressure A/C System Mounted Liquid Line - HVAC Cut-Off Switch; Pressure Switch
1987BuickRivieraN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1987CadillacBroughamN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1987CadillacDeVilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1987CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1987CadillacFleetwoodN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1987CadillacSevilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1987OldsmobileToronadoN/ALow Pressure A/C System Mounted Liquid Line - HVAC Cut-Off Switch; Pressure Switch
1986BuickRivieraN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1986CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1986CadillacFleetwoodBaseN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1986CadillacFleetwood75N/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1986CadillacFleetwood75 FormalN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1986CadillacSevilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1986OldsmobileToronadoN/ALow Pressure A/C System Mounted Liquid Line - HVAC Cut-Off Switch; Pressure 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:

03-8890226023006269-1123310258388902425-101145848145A60115203760052126122AC531-2896C2Z3281BAS81015C6TZ-3281AE-6226-TUE5TZ-3281BE6226E7TZ-3281AE9TZ-3281AES2012SF1TZ-3281AJSA1025MES2012SR230222S2012ZZL1-32-366

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

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