Keep the rear suspension located and quiet with the Delphi Suspension Trailing Arm TC5979, a direct-fit replacement for the rear upper position on the 2004-2007 Buick Rainier, 2003-2006 Chevrolet SSR, 2002-2009 Chevrolet TrailBlazer, 2002-2006 Chevrolet TrailBlazer EXT, 2002-2009 GMC Envoy, 2002-2006 GMC Envoy XL, 2003-2008 Isuzu Ascender, 2002-2004 Oldsmobile Bravada, and 2005-2009 Saab 9-7X. This arm helps guide wheel travel and control suspension geometry; see the "Vehicles it fits" section for engine-level details.
Delphi applies its OE engineering to the aftermarket, testing to the extreme so parts withstand temperatures below -40°C and over 120°C plus 720 hours of salt spray:
- OE-matched materials: control arms undergo 100% crack detection and ultrasonic flaw detection so materials match OE specifications.
- Robot welding: used for consistent performance and quality.
- Precision ball studs: machined to micron tolerances for durability and smooth joint operation.
- Anti-corrosion protection: applied to each part for corrosion prevention and enhanced aesthetics.
If a worn or damaged trailing arm is the source of clunking on acceleration or over rough pavement, or of loose rear-end handling, this replaces it. Replace suspension components in matched sets for balanced handling.
Interchange: 624.66016 · 52-1887
62466016 · 521887 · 15069838 · CA90576 · CA90576PR · CK660156 · RK660156 · CMS501013 · JTC2989
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
624.66016, 52-1887, 15069838, CA90576, CA90576PR, CK660156, RK660156, CMS501013, JTC2989
Frequently Asked Questions
What position does this trailing arm fit?
It is the rear upper trailing arm for the listed applications. Check the "Vehicles it fits" section to confirm it matches your vehicle before ordering.
Which vehicles does the TC5979 fit?
Applications include the Buick Rainier, Chevrolet SSR, TrailBlazer and TrailBlazer EXT, GMC Envoy and Envoy XL, Isuzu Ascender, Oldsmobile Bravada, and Saab 9-7X; see the "Vehicles it fits" section for exact years.
How does Delphi ensure quality on this part?
Delphi uses 100% crack and ultrasonic flaw detection, robot welding, and ball studs machined to micron tolerances, with anti-corrosion protection applied to each part.
What are signs my trailing arm may need replacing?
Clunking on acceleration or over bumps, loose or wandering rear-end handling, and cracked or damaged bushings can be signs. Diagnose the cause before replacing.
Should I replace more than one?
Replacing suspension components in matched sets helps keep handling balanced. Consult the vehicle service information for the correct fasteners and whether they may be reused.
