Parts for your 2015 Holden Colorado-Exhaust mount

2015 Holden Colorado Exhaust Mount — What It Does and When to Replace It

Exhaust mounts are absolutely relevant and fitted to the 2015 Holden Colorado. Technical sources including the Holden RG Colorado Service Manual (2012–2016, Exhaust System section), GM Global Service Information for the platform, and Australian aftermarket catalogues for the RG Colorado (e.g., listings from Kelpro and Mackay Rubber for exhaust hanger insulators) all show multiple rubber hanger mounts supporting the exhaust from the mid-pipe through to the rear muffler. So yes — this ute uses exhaust mounts, and they’re a small part that does a big job.

On a 2015 Colorado 2.8 turbo‑diesel, the exhaust mounts (also called hangers or insulators) suspend the pipes and muffler under the chassis, isolating vibration so the cabin stays quiet while keeping the system aligned. Good mounts prevent metal‑on‑metal contact, protect sensors and the catalytic converter, and help stop knocks over corrugations or when towing.

As part of regular servicing, it’s smart to inspect the mounts every service interval. Rubber lives a tough life near hot exhaust and road grime, so it can harden, crack or stretch with age and off‑road use.

• Common symptoms of tired mounts: exhaust sagging, rattles over bumps, a thud on start‑up/shut‑down, or visible cracking/elongated holes in the rubber.
• Quick checks: look along the system for even clearance to the body, crossmembers and spare wheel, confirm brackets aren’t bent and welds aren’t cracked.

Replacement is straightforward with the right access. A spritz of silicone spray helps slide the old insulators off their pegs. Fit like‑for‑like heat‑rated rubber (or quality polyurethane where appropriate) and avoid pre‑loading the system — the exhaust should hang naturally. If one mount has failed, consider replacing the neighbouring ones as a set, especially on higher‑kilometre or hard‑worked utes.

• Inspection cadence: check at each service (10,000–15,000 km).
• Typical lifespan: 5–10 years, shorter with towing, beach work or corrugations.
• Workshop time: often 15–30 minutes per mount on a hoist.

Quality matters. OE‑style mounts keep the exhaust at the correct height and angle, protecting sensors and bodywork. After fitting, recheck clearances and listen for any contact on a quick road test. Keeping the Colorado’s exhaust securely mounted pays off with fewer rattles, better refinement and less chance of costly damage down the track.

Popular questions about 2015 Holden Colorado exhaust mounts

How many exhaust mounts does a 2015 Colorado have?
It varies by body style and exhaust layout, but typically there are several rubber hangers from the mid‑pipe to the rear muffler. A quick look underneath will show the exact number on a given ute. The important thing is that each mount supports the system without strain or contact.

Can exhaust mounts be replaced at home?
Yes, if the vehicle is safely supported. Use stands or a hoist, never a jack alone. Silicone spray and exhaust pliers make removal easier. If the exhaust has shifted or there’s corrosion at brackets, it’s worth letting a workshop handle alignment and any seized hardware.

What causes exhaust mounts to fail early?
Heat, oil contamination, beach work, corrugations and heavy towing all accelerate ageing. Once the rubber hardens or stretches, vibrations increase and neighbouring mounts work harder, so timely replacement prevents a chain of failures.