HiAce Van: Clunking / knocking over bumps
Suspect the shock absorbers (upper and lower bushes) and the stabiliser links (bushes) first; they are tied in our cases. Both are perished rubber that knocks over bumps. Next come play in a hub bearing and the strut top mount. On a high-mileage HiAce, these suspension noises are almost always fixed with wear items.
What to suspect, in order
Repair cost estimates are shown only for parts with three or more cases that record a cost.
- How to tell (things you can check yourself)
- A knock or clunk from front or rear over bumps and rough roads. Torn bushes at the top or bottom of the shock, or oil seeping from the body. A floaty, bouncy ride is another sign.
- If you leave it
- Once the bush is gone, metal hits metal, the noise grows and the mounting is damaged. Lost damping also lengthens braking distance.
- Typical model years and mileage
- Concentrated on high-mileage vehicles and those carrying loads.
- How to tell (things you can check yourself)
- A light rattling over a series of small bumps. Rocking the car produces noise from the suspension. Especially common on lowered vans.
- If you leave it
- Worn ball joints get louder and can eventually separate.
Other single cases: Wheel hub bearing、Thermostat、Water pump
Confirm with an inspection. Jacked up and rocked, torn bushes and play show immediately.
FAQ
- It's only a noise — can I leave it?
- For a while, but once the bush is gone metal-on-metal damages surrounding parts. Having it done with the inspection is cheapest.
- I can't tell where it's coming from
- Just saying front/rear and left/right speeds up the inspection. Have a passenger listen over bumps.
Cases (what it was, and how it was fixed)
Each collected case: model year, mileage, symptom combination, cause and parts replaced, cost and source. Facts only, no quoted text.
Any other symptoms? Tap the ones that apply to filter the cases and see which parts were common for that combination.
| Code / year | Mileage | Other symptoms | Cause / parts replaced | Cost | Source |
|---|---|---|---|---|---|
| GDH206 | 330,000 km | — | Shock absorber | — | Shop blog (JP) |
| — | — | Coolant leak / coolant loss | Water pump、Thermostat、Shock absorber | — | Shop blog (JP) |
| — | — | Noise from underneath | Stabiliser link | — | Shop blog (JP) |
| — | 250,000 km | Speed-related humming / droning | Wheel hub bearing | — | Shop blog (JP) |
| — | — | — | Stabiliser link | — | Shop blog (JP) |
Costs are as recorded in each case and vary by vehicle condition, region and shop. "—" means not recorded.
For DIY repairers: find the part
Searches by the No.1 part name. Always confirm fitment by model code.
Sources
- Repair shop blogs (Japan)（5 cases）
No text is quoted from these sources. Only the facts of each case (model, symptom, cause, cost) are aggregated.
Reviewed by Tama Inc. (workshop certified by the Kanto District Transport Bureau) Reviewed on 2026-09-11 Updated 2026-09-13
This page shows what to suspect first, based on aggregated nationwide repair cases and our own experience. Always confirm the cause with an inspection. Repair costs are medians and ranges from the cases; they vary by vehicle condition, region and workshop.
Knocking is worn bushes. Replace the shock bushes top and bottom and the stab links in one go and it goes quiet in one visit.