Four Seasons 36679 HVAC Cut-Off Switch
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Four Seasons
 Pressure Switch

Four Seasons 36679 HVAC Cut-Off Switch

Brand Four Seasons 36679
Color Black
Comp Open/Closed Open
Connector Gender Female
Connector Shape Oval
Description Switch-Pressure /System Mount
Fitting Gender Female
Fitting Thread Size M12 x 1.50
Item Included A Desc 24676
Item Included A Qty. 1
Material Plastic / Metal
Meets / Exceeds OEM? YES
Mnt Sys Loc System Mounted
Number of Terminals 2
Operate Psi Low Off 12
Operate Psi Low On 23
Style Pressure
Type Low Cut-Out
Product line Pressure Switch
Fits Cadillac and Oldsmobile · 25 vehicles

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

Pressure switch. System-mounted cut-off switch with open operation at low pressure.

Durable construction. Plastic and metal build with a black finish and oval connector.

Cross-references AMS Automotive 4973, Febi-Bilstein 36679 and Global Parts Distributors LLC 1711435 for the same application. See all 18.

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Not what you need? See all HVAC Cut-Off Switch options

Four Seasons 36679 Pressure Switch Overview

The Four Seasons Pressure Switch 36679 is a system-mounted HVAC cut-off switch built for low-pressure A/C control. It uses a black plastic and metal housing, a female oval connector, and an M12 x 1.50 female fitting for direct service replacement on the HVAC system.

Compatible With Cadillac Eldorado, DeVille, and Seville, plus Oldsmobile Aurora applications, this pressure switch is specified as an open-contact, low cut-out design that meets or exceeds OEM requirements. The Four Seasons Pressure Switch line focuses on accurate HVAC pressure control for vehicles that rely on precise compressor protection.

Key Features

  • Four Seasons Pressure Switch part number 36679
  • HVAC cut-off switch with low cut-out pressure operation
  • Open-contact design with 2 terminals
  • Female oval connector and female M12 x 1.50 fitting
  • System-mounted configuration for HVAC service replacement
  • Black plastic and metal construction
  • Meets or exceeds OEM specifications

Detailed Product Description

This pressure switch monitors low-side A/C system pressure and opens the circuit at the specified low-off point to help protect the compressor and maintain proper HVAC operation. It is a direct-fit style pressure switch for vehicles using a system-mounted low pressure A/C cut-off switch, including 1994-2002 Cadillac Eldorado, 1994-2000 Cadillac DeVille, 1995-1999 Oldsmobile Aurora, and 1994-1997 Cadillac Seville. The Four Seasons 36679 is a practical replacement when the original switch no longer responds correctly to refrigerant pressure changes.

This part cross-references UAC SW11158C for the same application.

What It Helps Address

  • A/C compressor cycling caused by a faulty low-pressure switch
  • Compressor shutdown from inaccurate pressure sensing
  • HVAC system interruptions related to worn electrical contacts
  • Low-side pressure cut-off issues on system-mounted switch setups
  • Replacement needs for Cadillac Eldorado, DeVille, Seville, and Oldsmobile Aurora HVAC systems

Installation Notes and Tips

Install the switch on the HVAC system at the original mounting location and verify the connector style, thread size, and terminal count before installation. Confirm refrigerant charge and inspect the surrounding A/C circuit for leaks or wiring damage, since pressure switch faults can be caused by system conditions as well as switch wear. Use the vehicle service information for the correct diagnostic and replacement procedure.

Quality Assurance

Four Seasons lists this pressure switch as meeting or exceeding OEM requirements, making it a specification-based replacement for factory-style HVAC service.

Related reading

This part fits 25 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2002CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
2001CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
2000CadillacDeVilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
2000CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1999CadillacDeVilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1999CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1999OldsmobileAuroraN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1998CadillacDeVilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1998CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1998OldsmobileAuroraN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1997CadillacDeVilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1997CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1997CadillacSevilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1997OldsmobileAuroraN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1996CadillacDeVilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1996CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1996CadillacSevilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1996OldsmobileAuroraN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1995CadillacDeVilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1995CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1995CadillacSevilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1995OldsmobileAuroraN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1994CadillacDeVilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1994CadillacEldoradoN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
1994CadillacSevilleN/AMount the Low Pressure A/C Cut-Off Switch on the HVAC system.; Pressure Switch
Directly replaces or cross-references 18 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AMS Automotive — 4973Febi-Bilstein — 36679Global Parts Distributors LLC — 1711435UAC — SW11158C152876207898211894500014701863111366792560495189023422A77898AC8862ACD152876HS894MT0799SW11158