Standard Ignition S-636 Diverter Valve Harness Connector - Rear

Standard Ignition S-636 Diverter Valve Harness Connector

Restore a secure electrical connection with the Standard Ignition S-636 diverter valve harness connector. This pigtail assembly is built with high-grade materials to support strong conductivity and consistent terminal contact in emission control wiring repairs.

Use this connector when servicing diverter valve circuits on select Chevrolet Express, GMC Savana, Camaro, Firebird, Corvette, and other GM applications. The S-636 is a direct-fit style electrical connector for technicians replacing damaged, heat-affected, or corroded harness ends.

Key Features

• Male connector housing with female blade terminals
• 2-wire pigtail assembly for emission control electrical repair
• Built for dependable terminal engagement and conductivity
• Standard Ignition part number S-636
• Cross-references Four Seasons 85166 for the same application

Detailed Description

The Standard Ignition S-636 is a diverter valve harness connector engineered for electrical repair work where the original connector has failed. Standard Ignition focuses on replacement pigtails and sockets for common technician repairs, using durable materials to help maintain a stable connection at the terminal interface. This connector is listed for a wide range of GM vehicles, including Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, GMC Savana 3500, Chevrolet Camaro, Pontiac Firebird, and Chevrolet Corvette applications.

Fitment includes rear-position and N/A-listed applications across model years from 1987 through 2017, with notes for specific axle ratios, differential cover styles, and neutral safety switch or power seat harness use on certain vehicles. If you are replacing a damaged harness connector on a Chevrolet Express or GMC Savana, the S-636 provides a serviceable electrical repair solution. The part number S-636 is also referenced by multiple aftermarket interchange numbers for the same application.

What It Helps Fix

• Broken or brittle diverter valve connector housings
• Corroded or heat-damaged electrical terminals
• Intermittent connection at the emission control harness
• Open circuits caused by damaged pigtail wiring
• Poor terminal contact in GM electrical repair applications

Installation Notes and Tips

Verify connector gender, terminal style, and wire count against the original part before installation. Match the vehicle-specific notes in the fitment data, including rear axle ratio, differential cover type, and model-year design changes where listed. For best results, splice and seal the pigtail using proper automotive wiring repair practices and confirm terminal seating before returning the vehicle to service.

Quality Assurance

Standard Ignition builds its pigtails and sockets with high-grade materials and product development focused on technician repair needs. The S-636 is intended as a replacement connector for original equipment failures where a reliable electrical connection is required.