Parts for your 2017 Holden Captiva 7-Rack boots

2017 Holden Captiva 7 rack-boots: what they do, when to replace, and how to look after them

Per Holden/GM service information for the Captiva CG Series II Steering section, and GM Global EPC listings that include “Boot, Steering Gear” for 2016–2018 Captiva (CG), the 2017 Holden Captiva 7 runs a rack-and-pinion steering gear with a bellows rack-boot on each end. This is also supported by major AU/NZ parts catalogues that list replacement rack boots for the model. So rack-boots are absolutely fitted and relevant on a 2017 Captiva 7.

On this Captiva, the rack-boots (also called bellows or gaiters) seal the ends of the steering rack. They keep grit and water away from the inner tie-rod joints and the rack’s side seals, while letting the steering slide and articulate freely. The boot also helps keep the factory grease where it belongs. If a boot is torn, road grit quickly chews out the inner joint and can let moisture reach the rack seals.

A quick look at service time is smart: with the car safely raised, turn the steering lock-to-lock and check each boot’s concertina folds for cracks, splits or oiliness. A wet boot on a hydraulic-power-steering car usually means power steering fluid has leaked past an internal rack seal—time to have the rack assessed, not just the boot.

Replacement is straightforward for a trained tech. Best practice on a Captiva 7 is to:

• Inspect both sides—if one boot has failed, the other may be close behind.
• Use the correct clamps (ear/Oetiker type or the spec in the kit), not cable ties.
• Mark the tie-rod end position and book a wheel alignment afterwards to protect tyre wear.
• Check the breather/pressure equalisation path between boots if fitted, so the bellows can compress/expand without stress.

There’s no fixed replacement interval, in Aussie and Kiwi conditions, a boot can last many years, but heat, gravel roads and age harden the rubber. A sensible rule is to inspect every service (10,000–15,000 km), and replace at the first sign of cracking, perishing or contamination. Leaving a split boot will cost more later—inner tie-rod play, steering knock and even rack damage aren’t far behind.

For parts, OE or quality aftermarket kits for the Captiva CG are widely available and typically include the boot and clamps. Fresh grease for the inner joint should match the workshop manual spec. Keep the rack clean, the boots intact, and the Captiva 7’s steering will stay light, precise and quiet.

Popular questions about 2017 Holden Captiva 7 rack-boots

How often should rack-boots be replaced on a Captiva 7?
There isn’t a set kilometre interval. They should be inspected at every service, and replaced as soon as cracking, splits or contamination are found. Many last 5–10 years, but heat, UV and gravel roads can shorten that.

What are the signs of a bad rack-boot on a Captiva 7?
Visible splits, perished folds, grease flung onto the inner rim, or a knocking feel from the steering over bumps are common. If the boot is wet with power steering fluid, the rack’s internal seal may be leaking and needs professional attention.

Is it OK to drive with a torn rack-boot?
Short trips to a workshop are usually fine, but extended driving risks letting grit ruin the inner tie-rod and the rack. That turns a cheap boot job into an expensive steering rack repair or replacement.