Parts for your 2020 Holden Commodore-Struts

2020 Holden Commodore struts: what they do and when to replace

Struts are fitted on the front of every 2020 Holden Commodore (ZB), so the topic is absolutely relevant. Holden’s MY20 specifications and service manual, plus Opel Insignia B/GM E2XX platform technical material, list a MacPherson strut front end for LT/RS/Calais models and a HiPerStrut layout on the VXR. The rear is a five‑link independent setup with separate dampers and springs, so there are no rear struts. When people mention 2020‑Holden‑Commodore struts, they mean the front units, including adaptive FlexRide struts where fitted.

A front strut is both a structural member and a shock absorber. It carries the spring seat, controls body motion over bumps, and locates the wheel for camber and caster, affecting steering feel and tyre wear. On VXR, HiPerStrut geometry reduces torque steer and helps keep the tyre contact patch flatter under load. Where FlexRide is fitted, the electronic valves inside the strut vary damping in real time to balance comfort and control on Aussie and Kiwi roads.

Struts are sealed units, they’re inspected, not routinely rebuilt. As part of regular servicing (typically every 15,000 km/12 months), a technician should check for oil misting, damaged dust boots, worn top mounts/bearings, bent rods, and uneven tyre wear. On mixed urban–rural use, many Commodores need front struts around 80,000–120,000 km. Replace in pairs, fit new mounts and bump stops, and book a wheel alignment. For FlexRide cars, disconnect the damper connectors carefully and perform any required control‑unit learn. Always use a quality spring compressor and torque the lower bolts and top‑nut to spec with the vehicle at normal ride height.

• Excessive nose‑dive or floatiness
• Clunks over bumps or when turning
• Steering wander or tramlining
• Cupped or rapidly worn front tyres
• Visible fluid leaks from the strut

Popular questions about 2020 Holden Commodore struts

Do the 2020 Commodore’s rear wheels use struts?
No. The 2020 ZB Commodore runs front struts (MacPherson or HiPerStrut on VXR), while the rear is a five‑link independent suspension with separate shocks and springs. So when ordering or servicing struts, it’s the front axle only.

How long do front struts last, and should they be replaced in pairs?
Many owners see 80,000–120,000 km before performance drops off, but rough roads, heavy loads, or spirited driving can shorten that. Best practice is to replace struts in pairs, include new top mounts and bump stops, and follow up with a wheel alignment to protect tyre life.

Do FlexRide/adaptive struts need special steps when replacing?
Yes. FlexRide struts include electrical connectors and may require a scan tool procedure after installation. Handle wiring gently, avoid twisting the loom, and use OE‑spec or approved replacements to prevent warning lights or ride‑control faults.