Four Seasons 3717N A/C Compressor and Component Kit - Front and Rear

Four Seasons PAC-Kit w/ New Compressor

Four Seasons 3717N is an A/C compressor kit for select Chevrolet and GMC vans with R4 compressor systems. It is built for front and rear HVAC applications on 1983-1984 Chevrolet G20, Chevrolet G30, GMC G2500, and GMC G3500 models.

The Four Seasons PAC-Kit w/ New Compressor line is a complete service approach for R4-based air conditioning repairs, combining the compressor with related system components for a more thorough repair path. Part number 3717N is listed for both switch and no-switch compressor configurations.

• Fits 1983-1984 Chevrolet G20, front and rear, with R4 compressor
• Fits 1983-1984 Chevrolet G30, front and rear, with R4 compressor
• Fits 1983-1984 GMC G2500, front and rear, with R4 compressor
• Fits 1983-1984 GMC G3500, front and rear, with R4 compressor
• Application notes cover compressor with switch and compressor without switch configurations
• Four Seasons part number 3717N for targeted HVAC service

This A/C compressor kit is used for restoring cooling performance in older van HVAC systems when the compressor and related A/C components need replacement. It is a direct-fit service option for R4 compressor applications on Chevrolet G20, Chevrolet G30, GMC G2500, and GMC G3500 platforms.

• Loss of cabin cooling from a worn or failed compressor
• Noise or rough operation from the A/C compressor
• System contamination after compressor failure
• Reduced A/C performance in front and rear HVAC setups
• Need to service an R4 compressor-based air conditioning system

Installation should follow the vehicle’s service procedures for R4 compressor systems. Verify compressor switch configuration, flush the system as required, and confirm the correct orifice tube, expansion valve, accumulator, and oil specifications before charging the system. Part number 3717N should be matched to the exact vehicle and HVAC configuration listed above.

Quality assurance for this Four Seasons PAC-Kit centers on application-specific fitment for the listed Chevrolet and GMC vans. Confirm all system components and service steps before installation to support proper A/C operation.