Four Seasons 1740N A/C Compressor and Component Kit - Front

Four Seasons PAC-Kit w/ New Compressor 1740N

Four Seasons 1740N is a PAC-Kit with a new compressor for front A/C service on select GM SUVs. It is built for direct replacement applications on the Buick Rainier, Chevrolet Trailblazer, Chevrolet Trailblazer EXT, GMC Envoy, GMC Envoy XL, and Oldsmobile Bravada with the listed compressor and system requirements.

Key Features

• Four Seasons PAC-Kit w/ New Compressor for A/C compressor replacement
• Front HVAC application for select 2003-2007 GM vehicles
• Includes the specified service components referenced for the application: accumulator, orifice, flush, and oil
• Application-specific fitment for systems using the TRSA12 compressor where noted
• Part number 1740N for accurate catalog matching

Fitment Details

• Fits 2004-2007 Buick Rainier, front.
• Fits 2004 Oldsmobile Bravada, front.
• Fits 2003 Chevrolet Trailblazer, front, w/ TRSA12 compressor; w/o rear A/C.
• Fits 2003 Chevrolet Trailblazer EXT, front, w/ TRSA12 compressor; w/o rear A/C.
• Fits 2003 GMC Envoy, front, w/ TRSA12 compressor; w/o rear A/C.
• Fits 2003 GMC Envoy XL, front, w/ TRSA12 compressor; w/o rear A/C.
• Fits 2003 Oldsmobile Bravada, N/A, w/ TRSA12 compressor.

What This Part Is Used For

• Replacing a failed or noisy A/C compressor
• Restoring front cabin cooling performance
• Addressing compressor-related loss of refrigerant circulation
• Correcting poor A/C output caused by worn internal compressor components
• Servicing GM SUV A/C systems that require the listed application-specific components

Installation Notes

Verify compressor type, rear A/C configuration, and vehicle fitment before installation. The notes for this part call out TRSA12 compressor applications on several 2003 models, so matching the existing system is important. Follow proper A/C service procedures, including evacuation, flushing where required, and correct oil handling for the vehicle application.

Quality Assurance

Four Seasons supplies application-specific HVAC parts for automotive repair, and this kit is cataloged for the exact vehicle and system combinations listed above. Part number 1740N should be matched to the vehicle’s compressor style and A/C configuration before ordering.