1st Gen (Civilian HMMWV)
Hummer H1 (1992–2006)
Maintenance Schedule
9 recurring services keep the 1992–2006 Hummer H1 healthy — starting with oil changes every 3,000 miles. Budget roughly $6,000–11,700 in routine maintenance over 100,000 miles at typical U.S. shop prices.
Full schedule
Intervals follow the factory maintenance schedule for the 1992-2006 Hummer H1. Cost ranges are typical U.S. shop prices.
| Service | Interval | Est. cost | Notes |
|---|---|---|---|
| Oil Change | Every 3,000 mi or 3 mo | $80–150 | Engine oil and filter replacement (diesel or gas) |
| Fuel Filter (Diesel) | Every 15,000 mi | $100–200 | Replace diesel fuel filter |
| Air Filter | Every 15,000 mi or 12 mo | $60–120 | Replace engine air filter |
| Transmission Fluid | Every 30,000 mi | $200–400 | Replace automatic transmission fluid |
| Transfer Case Service | Every 30,000 mi | $150–300 | Service transfer case fluid |
| Differential Service | Every 30,000 mi | $200–400 | Replace front and rear differential fluid |
| Coolant Flush | Every 30,000 mi or 3 yr | $150–300 | Replace engine coolant |
| Glow Plug Service (Diesel) | Every 60,000 mi | $300–600 | Inspect and replace glow plugs |
| Brake Fluid | Every 2 yr | $100–200 | Replace brake fluid every 2 years |
Common questions
How often should I change the oil on a 1992–2006 Hummer H1?
Every 3,000 miles or 3 months, whichever comes first. A typical U.S. shop charges $80–150. Engine oil and filter replacement (diesel or gas).
How much does it cost to maintain a Hummer H1 (1992–2006)?
Routine maintenance on the 1992–2006 Hummer H1 runs roughly $6,000–11,700 over 100,000 miles at typical U.S. shop prices, spread across 9 recurring services. Independent shops usually land near the low end; dealers near the high end.
What is the most expensive scheduled service on this H1?
Glow Plug Service (Diesel) at $300–600, due every 60,000 miles. Inspect and replace glow plugs.
Cost ranges are estimates for typical U.S. independent shops and dealers; your local prices will vary. Always confirm intervals against your owner's manual — severe driving conditions (towing, short trips, extreme heat or cold) shorten many of them.