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Hummer H3

2003–2007 only

668 classified complaints 2 recalls

2003–2007 Hummer H3 models have 668 classified complaints on record for these years specifically, plus 2 recalls. The most common issue in this range is Body control and other modules, typically surfacing around 97,800 miles.

Computed directly from stored federal records for 2003–2007 model years only — not blended with the rest of this vehicle's production run. See the full Hummer H3 report for every year combined.

Where this range fits

2003–2007

2008–2010

Complaints filed per 5-year model-year window — highlighted bars link to their own dedicated page.

What breaks, and when — 2003–2007 only

Body control and other modules · Electrical 112 complaints

Median onset: 97,800 miles.

Wiring harness, grounds and connectors · Electrical 82 complaints

Median onset: 90,000 miles.

Blower motor and blend-door actuators · Heating and A/C 70 complaints

Median onset: 84,500 miles.

Typical repair: $150–$460 nationally.

Stalling and no-start · Engine 53 complaints

Median onset: 80,225 miles.

More common in older model years.

Cooling system: radiator, water pump, thermostat, fan · Engine 43 complaints

Median onset: 71,386 miles.

More common in older model years. · Typical repair: $260–$1,910 nationally.

Doors, windows, latches, seats and trim · Body and interior 43 complaints

Median onset: 87,000 miles.

More common in newer model years.

Airbags, seatbelts and restraints · Body and interior 41 complaints

Median onset: 98,000 miles. 34.1% of these reported an injury, a death, or a crash with fire.

More common in newer model years.

Head gasket and cylinder head · Engine 36 complaints

Median onset: 69,500 miles.

More common in older model years. · Typical repair: $1,620–$3,010 nationally.

From owner-filed complaints to NHTSA, not independently verified. Federal mileage reporting on recent complaints is sparse — see how it works. Cost ranges are national estimates from book labor hours and parts pricing, not this vehicle's actual repair history — they don't account for your location or shop type.

Cost estimator: what will this one cost you?

Enter the car's year and mileage. See which known problems are due in your next 3 years, what each costs at your state's labor rates, which ones to ask the seller about, and routine maintenance to budget for.

Sources: NHTSA Office of Defects Investigation — complaints and recalls, scoped to 2003–2007 model years. See the full Hummer H3 report for every year and full specs/safety data.