Parts for your 2016 Holden Colorado-Rack boots

2016 Holden Colorado rack-boots: what they are, why they matter, and when to replace them

Technical sources confirm the 2016 Holden Colorado (RG) runs a rack-and-pinion steering gear that uses protective rack-boots (also called bellows). This is documented in the GM Holden RG Colorado Service Manual (Steering – Rack and Pinion, boot clamp procedures), reflected in GM/ACDelco parts catalogues listing steering gear boots for RG Colorado, and supported by major AU/NZ parts catalogues that carry replacement rack-boots specifically for the 2012–2016 Colorado. So yes—rack-boots are fitted and relevant on this model.

On the 2016 Holden Colorado, rack-boots shield the inner tie rods and the steering rack from dust, water, and grit. They also help retain grease around the inner joint and keep contaminants out of the rack’s seals. Because the Colorado often sees off-road and tradie duty, intact boots are critical to guard against corrosion, premature inner tie rod wear, and power steering fluid leaks on hydraulic systems.

As part of regular servicing, the rack-boots deserve a quick look whenever the front end is inspected. Tell-tales of trouble include split rubber, oil weeping from the boot area, loose or missing clamps, or a boot that’s collapsed and rubbing. Left unchecked, a torn boot can let muck into the rack, chewing out rack seals and inner tie rods—turning a cheap fix into an expensive steering rack replacement.

Replacement is straightforward for a trained tech and is usually done in pairs if one side has failed. After removing the outer tie rod end and clamps, the old boot slides off, the joint is cleaned, fresh lubricant is applied as specified, and a new boot with correct clamps is fitted. A wheel alignment should follow any tie rod disturbance. Quality matters—OE-style boots and proper crimp or ear clamps keep things sealed when the vehicle is worked hard or sees creek crossings.

• Inspection interval: at every service or 10,000–15,000 km, and after off-road or floodwater use.
• Replace if: cracks, splits, fluid contamination, missing/damaged clamps, or abrasion marks are found.
• Good practice: pair replacement, correct clamp tooling, and post-fit alignment.

For owners who tow, tour, or hit gravel regularly, keeping the Colorado’s rack-boots healthy is a small job that protects the steering gear for the long haul.

Popular questions about 2016 Holden Colorado rack-boots

How long do rack-boots typically last on a 2016 Colorado?
Service life varies with use. On-road utes can see many years from the factory boots, while vehicles that work off-road, in mud, or through floodwater may need boots sooner. Regular inspections catch small splits before they become big steering bills.

Can a split rack-boot cause a WOF/RWC fail?
Yes. A torn boot can allow contamination into the steering gear and is commonly flagged during safety inspections. Replacing the boot and confirming there’s no play in inner/outer tie rods usually resolves it.

Is wheel alignment required after replacing a rack-boot?
If the outer tie rod is removed or adjusted to fit the boot (common practice), a wheel alignment is recommended to keep steering straight and tyre wear even.