Parts for your 2012 Holden Commodore-Steering bushes

2012 Holden Commodore steering bushes — what they are and when to replace them

Yes, the 2012 Holden Commodore (VE Series II) uses steering bushes. Holden/GM service information for the VE platform specifies a rack-and-pinion steering gear mounted to the front subframe (K-frame) via rubber insulators/mounting bushes. Workshop manuals covering VE (e.g., Holden/GM Global Service Information and Gregory’s/Max Ellery’s repair manuals) include inspection of the steering gear mounting insulators. Aftermarket catalogues from Australian brands SuperPro and Nolathane also list specific steering rack mount bush kits for VE 2006–2013 (for example, common part numbers like SuperPro SPF3450K and Nolathane 41066), which backs up that these bushes are present and serviceable on a 2012 Commodore.

On this model, the steering bushes support and locate the steering rack on the K-frame, isolating vibration and noise while keeping the rack accurately centred. When the bushes are healthy, the steering feels tight and predictable, with good on-centre feel and clean response in corners. As they age—heat, oil exposure and rough roads all play a part—the rubber softens, cracks or compresses. The rack can then shift slightly under load, which shows up as vague steering, clunks and kickback. Left too long, worn bushes can contribute to accelerated tyre wear and added stress on tie-rod ends and the rack itself.

• Tell-tale signs they’re due: steering knock over bumps, a dull clunk on turn-in, wandering at motorway speeds, shimmy through the wheel, or visible cracking/perishing of the bush material.
• Inspection tip: check for oil soaking from power-steering leaks, as fluid rapidly degrades rubber bushes.
• Service interval: a quick look at every service, and a thorough inspection around 40,000–60,000 km or if any of the above symptoms appear.

Replacement is straightforward for a trained tech but does involve safely supporting the K-frame and loosening rack mounts, torqueing at ride height is important so the bushes sit neutral. After fitting bushes—whether OE rubber for comfort or polyurethane for a firmer, sportier feel—a wheel alignment is recommended to make sure the steering is centred and toe is bang-on. If the Commodore sees heavy loads, rough roads or spirited driving, consider polyurethane for better longevity, for mostly urban commuting, fresh OE-style rubber keeps NVH nicely controlled.

Popular questions about 2012 Holden Commodore steering bushes

How do they know if their Commodore’s steering bushes are worn?
Common signs include a thud or knock over speed bumps, vague or wandering steering at highway speeds, and a twitch or shimmy through the wheel on rough patches. Under the car, perished, cracked or oil-soaked bushes are a giveaway. If someone can feel the rack shift slightly when a helper rocks the steering wheel, the bushes are likely tired.

Should they choose rubber or polyurethane replacement bushes?
OE-style rubber keeps the ride supple and quiet—great for daily use. Polyurethane (from brands like SuperPro or Nolathane) firms up the steering, resists oil and heat better, and generally lasts longer, but can pass a touch more road feel into the cabin. For tourers and commuters: rubber. For keen drivers or rougher roads: polyurethane.

Do they need a wheel alignment after replacing steering bushes?
Yes. Even if the tie-rods aren’t touched, centring the rack and tightening mounts can subtly change the relationship between the rack and wheels. A post-repair alignment ensures straight-ahead steering, correct toe, and even tyre wear.