Four Seasons 20956 A/C Power Module - Front

Four Seasons 20956 A/C Power Module

The Four Seasons Power Module 20956 is an A/C control module built for variable-speed HVAC operation. It is a direct-fit replacement for select Buick, Cadillac, Oldsmobile, and Pontiac applications, with OE-style electrical connections and housing construction for service-ready replacement work.

Key Features

• Brand: Four Seasons Power Module line
• Part number: 20956
• Type: A.T.C. A/C power module
• Variable-speed operation for HVAC blower control
• Black connector color with 2 female rectangular connectors
• Blade terminals with 3 & 3 terminal layout
• Aluminum / plastic housing construction
• Meets or exceeds OEM requirements

Product Details

Four Seasons 20956 is an HVAC control module used to regulate A/C blower performance in vehicles equipped with variable-speed climate control. The Power Module product line focuses on replacement modules that match OE electrical interface and mounting style, helping restore proper HVAC function without changing the original system design. This part cross-references UAC SW11299C for the same application.

Compatible With 2000-2005 Buick LeSabre, N/A; 2000-2005 Cadillac DeVille, N/A; 2000-2005 Pontiac Bonneville, N/A; 2000-2004 Cadillac DeVille, Front; 1998-2004 Cadillac Seville, N/A; 1998-2004 Cadillac Seville, Front; 2001-2003 Oldsmobile Aurora, N/A; 2000-2002 Cadillac Eldorado, N/A; 1998-1999 Cadillac DeVille, Front; and 1998-1999 Cadillac Eldorado, Front. Common search terms include Buick LeSabre A/C power module replacement, Cadillac DeVille HVAC control module, and Cadillac Seville blower control module.

What It Helps Resolve

• Intermittent blower motor speed operation
• HVAC fan stuck on one speed
• No blower response from the climate control system
• Erratic A/C or heater airflow control
• Electrical failure in the HVAC power module circuit

Installation Notes and Tips

Verify connector style, terminal layout, and vehicle application before installation. This module uses 2 female rectangular connectors with blade terminals, so the harness should match the original configuration. Confirm whether the vehicle uses the front or N/A listed position for the exact application before replacement. Inspect the HVAC connector and surrounding wiring for heat damage or corrosion before installing the new module.

Quality Assurance

Four Seasons 20956 is listed as meeting or exceeding OEM requirements for the specified applications. The aluminum / plastic housing and OE-style connector design support a direct replacement approach for factory HVAC systems.