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2003 Hummer H3Recalls, problems, MPG & safety

NHTSA lists 0 safety recalls and 2 owner complaints for the 2003 Hummer H3. Most complaints involve electrical system (2) and vehicle speed control (1).

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Combined MPG
—
No EPA rating found
NHTSA overall
—
Not rated by NCAP
Safety recalls
0campaigns
NHTSA
Owner complaints
2
Top: electrical system
Fuel cost / yr
—
No EPA estimate
01 —Recalls

Safety recalls

NHTSA campaigns for this model year
0 recalls found in NHTSA data for the 2003 Hummer H3 as of Nov 10, 2026.
Data from NHTSA Recalls API · synced Nov 10, 2026NHTSA vehicle page
02 —Complaints

Owner complaints by component

2 complaints filed with NHTSA · Nov 2012 – Aug 2017
  1. Electrical system2
  2. Vehicle speed control1
  3. Visibility1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

By model year

Complaints for each H3 model year we’ve synced.

View as table
Model yearNHTSA complaints
20032
2006362
2007238
2008113
200980
20107
Crashes reported
0
Fires reported
0
Injuries reported
0
Deaths reported
0
Data from NHTSA Complaints API · synced Nov 10, 2026NHTSA vehicle page
03 —Common problems

What owners report most

Verbatim excerpts from NHTSA complaints, by component

Electrical system

2 reports
“THE DASH CLUSTER IS NOT WORKING NO GAUGES OR SPEED ODOMETER”
Owner complaint to NHTSAFiled Aug 1, 2017Electrical system, Vehicle speed controlODI 11012047

Vehicle speed control

1 report

Visibility

1 report
“HEATER RELAY GONE 2 TIMES. *TR”
Owner complaint to NHTSAFiled Nov 29, 2012Electrical system, VisibilityODI 10486487
Send a problem to a mechanic on findmechanic.ai
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026
04 —Safety

NHTSA 5-Star Safety Ratings

New Car Assessment Program
NHTSA has not published 5-Star Safety Ratings for the 2003 Hummer H3 as of Nov 10, 2026.
Data from NHTSA NCAP Safety Ratings API · synced Nov 10, 2026
05 —Maintenance

Maintenance basics

General guidance, not the OEM schedule. Check your owner’s manual.
General guidance
ItemMilesTimeNote
Engine oil & filter5,000–10,000 mi6–12 monthsFollow the oil-life monitor if fitted
Tire rotation5,000–7,500 miEvery oil changeCheck pressure monthly
Engine air filter15,000–30,000 mi1–2 yearsSooner in dusty areas
Cabin air filter15,000–25,000 mi1–2 years
Brake fluid—2–3 yearsAbsorbs moisture over time
Coolant60,000–100,000 mi5–10 yearsLong-life coolants last longer
Spark plugs60,000–100,000 mi—Iridium/platinum plugs at the long end
12V battery—3–5 yearsHeat shortens battery life
  • Engine oil & filter5,000–10,000 mi
    6–12 months
  • Tire rotation5,000–7,500 mi
    Every oil change
  • Engine air filter15,000–30,000 mi
    1–2 years
  • Cabin air filter15,000–25,000 mi
    1–2 years
  • Brake fluid—
    2–3 years
  • Coolant60,000–100,000 mi
    5–10 years
  • Spark plugs60,000–100,000 mi
    —
  • 12V battery—
    3–5 years
Typical intervals for modern cars. Severe service (towing, short trips, extreme heat or cold) shortens them.
07 —FAQ

2003 H3 questions

How many recalls does the 2003 Hummer H3 have?

0 recalls found in NHTSA data as of Nov 10, 2026.

What are the most common 2003 Hummer H3 problems?

Owners filed 2 complaints with NHTSA. The most-cited components are electrical system (2), vehicle speed control (1), visibility (1). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.

Data from NHTSA & EPA · synced Nov 10, 2026