Parts for your 2018 Holden Colorado-Coil springs

2018 Holden Colorado coil springs — what they do and how to look after them

Technical references confirm that coil springs are fitted to the front of the 2018 Holden Colorado (RG series), with a double-wishbone independent front suspension using a coil-over spring and gas shock, while the rear runs leaf springs. This layout is detailed in the Holden RG Colorado Service Manual (Chassis – Suspension), the 2018 Owner’s Handbook, and specification guides such as RedBook AU and trade workshop data commonly used across Australia and New Zealand.

On the front end, the coil springs carry vehicle weight, set ride height and let the wheels move up and down over bumps. Paired with the front shocks, they keep the Colorado stable under braking, smooth out corrugations and help tyres maintain grip on- and off-road. Because the rear uses leaf packs for load-carrying, coil springs are specific to the front assembly on this model.

For servicing, there’s no fixed replacement interval for front coils, but inspection is smart every 10,000–20,000 km or at each service, especially if the ute tows, runs a bullbar/winch, or sees corrugations. Look for chipped or cracked paint exposing bare metal, rust pitting, sagging ride height on one side, coil bind marks, or a harsh front end that bottoms out. Any broken coil is a replace-now item.

• Replace in axle pairs to keep ride height and handling even.
• Choose spring rates to suit accessories and payload, OE-equivalent for stock setups, uprated for barwork or constant loads.
• Always perform a wheel alignment after coil or strut assembly replacement.
• Torque control arm and strut fasteners at normal ride height to avoid bush preload.
• Inspect and replace isolators, seats and top mounts if perished or noisy.
• Recheck fasteners after 500–1,000 km, especially on vehicles used off-road.

DIY fitters should use proper spring compressors and follow workshop manual procedures. Avoid heating coils to adjust height and never clamp coils to “stiffen” the front—both are unsafe and illegal. For fleets or touring rigs, periodic height checks (guard-to-hub measurement) help spot gradual sag. With the right spring choice and good shocks, the front end stays planted, steering remains predictable and tyre wear is kept tidy—exactly what a hard-working Colorado deserves.

FAQs

Does a 2018 Holden Colorado have rear coil springs?
No. The 2018 Colorado uses coil springs only on the front suspension. The rear is a leaf-spring setup designed to handle payload and towing, which is why it looks and behaves differently to wagons with rear coils.

How often should the front coil springs be replaced?
There’s no set kilometre limit. Inspect them at each service (or every 10,000–20,000 km). Replace if a coil is cracked, the front ride height has sagged, there’s corrosion pitting, or the vehicle bottoms out. When adding heavy accessories, consider springs with a suitable rate.

Can lift springs be fitted without changing the front shocks?
Small lifts may physically fit, but matched shocks are recommended to control the taller spring and maintain travel. An alignment is essential, and check CV angles and local certification rules in Australia and New Zealand for legal compliance.