Parts for your 2009 Holden Colorado-Exhaust mount

2009 Holden Colorado exhaust-mount: purpose, fitment and service advice

Technical sources confirm the 2009 Holden Colorado absolutely uses exhaust mounts (also called exhaust hangers/insulators). The Holden Colorado RC Series Service Manual (Exhaust System – Muffler and Tailpipe), the Isuzu D‑MAX TFR/TFS 2007–2012 Workshop Manual, and GM Service Information for the Colorado/Rodeo platform all show multiple rubber isolator mounts supporting the front pipe, centre section and tailpipe. So the exhaust-mount is very much a relevant, fitted part on this ute.

On the 2009 Colorado, exhaust mounts suspend the exhaust under the chassis and isolate vibration so it doesn’t rumble through the cabin. They keep correct clearances from the body, driveline, spare wheel and towbar, allowing the system to move with engine torque and over corrugations without knocking. Each mount is a rubber insulator on a bracket or peg, they’re simple parts that do a lot of heavy lifting.

As part of routine servicing, a quick visual and physical check of every mount from the catalytic converter back is smart practice—especially for vehicles that tow, see gravel roads, or live in hot climates. Look for perished rubber, cracks, elongation, or mounts that sit on a stretch. Also inspect the welded hangers and chassis brackets for corrosion or loose fasteners.

• Typical symptoms of worn mounts: exhaust sitting low, tailpipe off-centre, metallic knocks over bumps, extra cabin vibration or drone, and fresh rub marks on crossmembers or the spare.

Replacement is straightforward: safely support the exhaust, spritz silicone spray on the rubber, and lever the old mount off the pegs. Dedicated exhaust-hanger pliers make it easier. Fit quality EPDM rubber insulators of the correct length, polyurethane options exist but can add harshness. If brackets are removed, tighten hardware to the manufacturer’s spec and recheck alignment so the system clears the body, leaves, diff and bumper by several millimetres.

How often do they need doing? There’s no fixed interval, but many last 5–10 years. Aussie and Kiwi heat, off-road shake and towing can shorten that. A quick check every service (10,000–15,000 km) helps catch issues before they become rattles or cracked welds. After any mount change, start the engine, confirm no contact points, and take a short drive to ensure the exhaust sits quietly where it should.

FAQs

How many exhaust mounts does a 2009 Holden Colorado have?
Most have three to five, depending on cab/bed length and the specific exhaust. Expect one near the front pipe/cat, one around the centre/muffler, and one or two at the rear tailpipe. Aftermarket systems may add or relocate mounts.

Can worn mounts cause vibration or drone?
Yes. If the rubber sags or splits, the exhaust can touch the chassis or hang crooked, transmitting vibration into the cabin and sometimes stressing the flex joint. Replacing tired mounts typically restores the quiet, isolated feel.

Are polyurethane mounts a good upgrade?
They’re firmer and can hold position under heavy loads, but often increase NVH. For daily driving and touring, quality rubber is usually the better balance. Poly can suit hard‑worked or modified setups if a little extra firmness is acceptable.