Global Parts 1711701 A/C Selector Switch

A/C Selector Switch for Classic GM HVAC Systems

Restore proper climate control operation with this Global Parts A/C selector switch, part number 1711701. It is designed for vehicles that use an electrical mode selector to communicate HVAC requests to the engine management system or directly control compressor operation on earlier systems.

• Electrical A/C selector switch for instrument panel HVAC controls
• Rotary mode selector design on many listed applications
• Supports ECM-controlled A/C operation on later vehicles
• Directs compressor shutoff on earlier systems to help prevent failure
• Fits a wide range of GM cars, trucks, and vans from 1977-1994

Detailed Fitment and Function

Global Parts 1711701 is an HVAC instrument panel A/C selector switch used in a broad range of Chevrolet, GMC, Buick, Pontiac, Cadillac, Oldsmobile, and related GM applications. It serves as the control interface for selecting A/C and blower modes, making it a direct replacement for worn, intermittent, or non-responsive rotary selector switches. This part cross-references Four Seasons 36695 for the same application.

Compatible vehicle coverage includes Fits 1986-1994 Pontiac Sunbird, N/A; Fits 1987-1991 Chevrolet Blazer, N/A; Fits 1983-1991 GMC Jimmy, N/A; Fits 1983-1986 Chevrolet C10, N/A; and Fits 1978-1980 Pontiac Firebird, N/A. Additional coverage includes many GM G-series vans, Suburban models, and select Buick, Oldsmobile, and Cadillac applications. Part number 1711701 is also referenced in aftermarket listings for several GM HVAC selector switch applications.

Common Problems This Switch Can Help Solve

• HVAC mode selector does not respond when turned
• A/C compressor does not engage from the dash control
• Intermittent blower or mode selection operation
• Worn rotary switch contacts causing inconsistent climate control
• Loss of electrical feedback to the ECM on later A/C systems

Installation Notes and Tips

Verify the connector style, control layout, and vehicle year before installation. This switch is listed for N/A position applications and rotary selector configurations on many models, so match the original dash control design carefully. Confirm the HVAC system type on your vehicle, especially on ECM-controlled A/C setups versus earlier direct-control systems.

Quality Assurance

Global Parts supplies this selector switch as a replacement HVAC electrical component for listed GM applications. The manufacturer notes that this style of switch is used to provide feedback to the engine management system on modern vehicles and to control compressor operation on earlier vehicles.