CARFACTBOOK / DIAGNOSTIC REFERENCE

Start with the symptom. Follow the evidence.

Choose a symptom and your exact chassis when possible. Each next check follows the result you record—not a guessed failed part. CarFactBook keeps a traceable path and prepares a practical mechanic handoff.

Symptom first

What are you seeing?

Electrical

Won't start / hard starting

Check reviewed reports for Honda Shuttle GP8.

Electrical

Warning light or message

Check reviewed reports for Honda Shuttle GP8.

Cooling

Overheating / running hot

Check reviewed reports for Honda Shuttle GP8.

A/C / climate

A/C not cold

Check reviewed reports for Honda Shuttle GP8.

Suspension / steering

Vibration / shaking

Check reviewed reports for Honda Shuttle GP8.

Brakes

Brake problem

Check reviewed reports for Honda Shuttle GP8.

Hybrid / EV system

Hybrid-system problem

Check reviewed reports for Honda Shuttle GP8.

Fuel / emissions

Poor fuel economy

Check reviewed reports for Honda Shuttle GP8.

Choose an exact vehicle

Selected: Honda Shuttle GP8 · 2015–2022

Diagnostics v3 · Structured symptom flow

Vibration / shaking — structured test-result path

0 results recorded
Safety boundary. If vibration is severe, steering control changes, or a tyre/wheel appears damaged, stop driving and have the vehicle inspected.
Next reachable check

Does the vibration happen while the vehicle is stationary?

Stationary versus road-speed vibration is a useful first split.

Mechanic handoff summary

Further evidence required. 0 reachable results recorded.

Results stay on this page until you leave or change vehicle/symptom. Optional saving stores only this v3 session on this browser, separate from Garage and Vehicle Passport. It is not uploaded or shared. References are refreshed from CarFactBook when you return.

Preparing Diagnostics v3 handoff…

After a mechanic checks or repairs the car

Close the loop with the actual diagnosis, repair, part, cost and follow-up. The exact vehicle, symptom area and the test-result path above are prefilled, but you can edit them before submitting.

Choose an exact vehicle above to prepare a repair-outcome report.Reports remain pending until CarFactBook reviews them. A diagnostic path or external test result never becomes a confirmed diagnosis automatically.
Honda Shuttle GP8

Useful references for your exact car

These references relate to the selected symptom. They do not identify a faulty component or recommend replacing it. Confirm equipment, production period and source caveats for your individual car.

Verified facts

Engine oil capacity →

3.1 L oil only · 3.3 L with filter

Reference service quantity; final oil level should be checked per Honda procedure.

Honda Motor Co. · Verified 2026-10-04

Engine oil viscosity →

Honda ULTRA NEXT / Green / LEO or API SM/SN+ 0W-16, 0W-20, 5W-30

Choose viscosity for ambient conditions and the exact production period.

Honda Motor Co. · Verified 2026-10-04

Factory tire pressure →

15-inch: 220/220 kPa front/rear · 16-inch: 240/230 kPa front/rear

The door-jamb tire placard on the individual vehicle remains the final reference.

Honda Motor Co., Ltd. · Verified 2026-10-06

Factory tire sizes →

185/60R15 84H or 185/55R16 83V

Confirm exact grade and door-jamb placard.

Honda Motor Co. · Verified 2026-10-04

Factory wheel rim width →

6J

Wheel diameter and inset vary by factory package; match the complete wheel specification.

Honda Motor Co. · Verified 2026-10-06

Wheel bolt-hole count →

4 holes

Confirm any aftermarket wheel against the exact vehicle and wheel manufacturer specifications.

Honda Motor Co. · Verified 2026-10-06

Wheel hub diameter →

56 mm

Confirm any aftermarket wheel against the exact vehicle and wheel manufacturer specifications.

Honda Motor Co. · Verified 2026-10-06

Wheel PCD →

100 mm

Confirm any aftermarket wheel against the exact vehicle and wheel manufacturer specifications.

Honda Motor Co. · Verified 2026-10-06

Step-by-step guides

Honda Shuttle GP8: Check 15- vs 16-Inch Tyre Pressure →

Identify whether a Shuttle GP8 4WD Hybrid has the documented 15- or 16-inch tyre package, then inspect and adjust cold tyre pressures against the correct Honda source and vehicle placard.

Easy · 10–15 minutes

Honda lists different GP8 tyre pressures for 15- and 16-inch equipment. Always verify the driver's-side pressure placard and fitted package. Never open or use a puncture-repair sealant kit as part of this routine inflation guide.

Maintenance

Documented service references; your service history determines what is due.

Full exact-car maintenance schedule →

Parts / fitment

Reference specifications, not a shopping list or proof that these parts need replacement. Fitment conditions still apply.

Spark plugs

NGK DILZKAR7C11S or DENSO DXE22HCR11S

Honda's Shuttle Hybrid owner manual specifies NGK DILZKAR7C11S or DENSO DXE22HCR11S iridium spark plugs for this generation. CarFactBook scopes this published row to GP8; confirm exact production period before purchase.

Honda Motor Co., Ltd. source ↗ · Verified 2026-10-08

Factory tire sizes

185/60R15 84H or 185/55R16 83V

Confirm exact grade and door-jamb placard.

Honda Motor Co. source ↗ · Verified 2026-10-04

Full exact-car parts references →

Reviewed repair evidence

Vibration / shaking

0 related reports

Reports are matched by related system category for Honda Shuttle GP8. Compare the recorded symptom and outcome; a repair on another car does not diagnose yours.

No reviewed match yet. CarFactBook will not manufacture a likely cause just to fill this screen. Check the exact vehicle facts or contribute a real repair outcome through Problems.

Browse or contribute reviewed problem & repair evidence →