Standard Ignition S-989 Oxygen Sensor Connector

Oxygen Sensor Connector for GM Applications

Standard Ignition S-989 is a female oxygen sensor connector built for direct electrical repair on a range of GM vehicles. It uses 4 blade terminals, 4 wires, and a 17-inch harness length to restore a secure connection at the downstream oxygen sensor.

Compatible with Chevrolet Sonic, Cruze, and Trax, as well as Buick Encore and Cadillac CTS applications, this Standard Ignition S-989 connector is made with high-grade materials to support strong conductivity and consistent terminal contact.

Key Features

• Female oxygen sensor connector with 1 connector housing
• 4 male blade terminals for 4-wire sensor circuits
• 17-inch harness length for repair and splice-in service
• Includes butt splices for wire-to-wire connection work
• Built for downstream oxygen sensor connection repair
• Standard Ignition S-989 for GM electrical connector replacement

Detailed Description

This oxygen sensor connector is designed for technicians replacing damaged, heat-affected, or corroded sensor plugs on GM platforms. Standard Ignition S-989 supports a direct repair approach for downstream oxygen sensor wiring, helping restore a stable signal path between the sensor and the vehicle harness. It cross-references Hygrade Tuneup 1572 for the same application.

Fits 2020-2021 Buick Encore, downstream oxygen sensor connection; Fits 2015-2021 Chevrolet Trax; Fits 2012-2020 Chevrolet Sonic; Fits 2013-2019 Buick Encore; Fits 2011-2016 Chevrolet Cruze; Fits 2010-2011 Cadillac SRX; Fits 2008-2009 Pontiac G8; Fits 2004-2005 Buick Rendezvous; Fits 2003-2005 Cadillac CTS; Fits 2005 Cadillac STS. Standard Ignition S-989 is a practical replacement when the original connector body, terminals, or wiring interface no longer maintain proper contact.

Common Repair Uses

• Broken or brittle oxygen sensor connector housing
• Corroded or heat-damaged terminal contacts
• Intermittent downstream oxygen sensor signal loss
• Wiring repairs after connector melt or contamination
• Restoring a secure plug connection on GM exhaust sensor circuits

Installation Notes and Tips

Match the 4-blade terminal layout and wire count before installation. Use the included butt splices for a secure splice-in repair, and verify pin orientation and wire routing before connecting to the downstream oxygen sensor. Confirm the vehicle application against the original connector style on Chevrolet Sonic, Cruze, Trax, and Buick Encore models before final assembly.

Quality Assurance

Standard Ignition builds its pigtails and sockets with high-grade materials and long-standing OE-focused engineering practices to support reliable conductivity and consistent electrical connection performance.