Full-size SUV · USA · 2003-2009

Hummer H2

GM-era Hummer on Suburban frame. 6.0L LQ4 V8 then 6.2L L92 V8. Cultural icon of mid-2000s excess. ~152,000 sold.

Verdict
C
Years
2003-2009
Generations
1
Segment
Full-size SUV

The H2 (2003-2009) was the first GM-developed Hummer, launched after GM acquired marketing rights to the Hummer name in 1999. Built by AM General on contract on a modified GMT820 platform — essentially the Chevrolet Suburban / GMC Yukon XL frame with significantly different bodywork, interior, and powertrain calibration. Engine progression: 6.0L Vortec LQ4 V8 (316 hp / 360 lb-ft) at launch; 6.2L Vortec L92 V8 (393 hp / 415 lb-ft) from 2008. Six-speed automatic from 2008 (four-speed before). Full-time 4WD with two-speed transfer case, locking rear differential standard, locking front differential optional. Base SUT (Sport Utility Truck) pickup version added 2005. The H2 became a cultural icon of mid-2000s American excess — bought largely as a status statement rather than for off-road capability — and was equally polarising at the time, frequently cited in environmental criticism for its ~10 mpg combined fuel economy. Production at AM General's Mishawaka, Indiana plant. Total H2 production approximately 152,000 cars across the seven-year run. Killed 2009 in GM's bankruptcy reorganisation that ended both Hummer and Pontiac. Now firmly cult/period-piece collector — clean examples have appreciated as nostalgia for the era has set in.


Known issues by generation

Common faults reported on each generation — useful when shopping the used market.

2003-2009 · Sole Generation
  • Air suspension air-spring leaks (rear)
  • Locking differential actuator failures
  • Active fuel management lifter failures (LQ4/L92 V8)
  • Cooling system thermostat housing failures
  • Climate control HVAC blend door failures

Rivals

Cadillac Escalade · Lincoln Navigator · Land Rover Range Rover · Toyota Land Cruiser