2003-2008 Hummer H2: Reliability
Updated: 11/23/08
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Our reliability study for this generation Hummer H2 includes details on average repair costs, manufacturer recalls, and everything you need to know to gauge the long-term reliability of this generation Hummer H2 .
Trouble Spots
Consumer Guide's® Auto Editors have scoured repair bulletins and questioned mechanics to search
for commonly occurring problems for a particular vehicle. In some cases we also give possible manufacturer-suggested
solutions. In many instances these trouble spots are Technical Service Bulletins posted by the manufacturer,
however, we have our own expert looking at additional vehicle problems.
Air conditioner:
The A/C may quit or may occasionally blow warm air due to a bad low-pressure switch. (2003)
Electrical problem:
If the OnStar system quits or won't come on (no power), but comes back to life if the fuse is removed for five minutes, the vehicle communications interface module must be replaced or else the problem will recur. (2005-06)
Fuel gauge:
The engine may not start or may stall because the tank is empty yet the gauge shows fuel remaining, or the fuel gauge will not show full after refilling due to sulfur corrosion of the fuel level sender and if after treating with Fuel System Cleaner PLUS the problem remains, the sender may need to be replaced. (2003-06)
Fuel pump:
The nozzle may keep shutting off during refueling due to the vent opening being collapsed inside the tank. (2003)
Keyless entry:
The remote keyless system quits working and there was a campaign to reprogram the electronic module inside the passenger door and this fix will be made at no charge regardless of time or mileage. (2003)
Sunroof/moonroof:
Water leaks at the sun roof requiring replacement of the kinked drain hoses with updated parts. Wind deflector rattles at cruise are due to deflector screws coming loose. (2003)
Transaxle leak:
Shifting problems, loss of power, or inability to move at all may be due to a transfer case leak at the output shaft and, after repair, a longer driveshaft yoke must be installed. (2003)
Consumer Guide® Estimated Repair Costs
This table lists costs of likely repairs for comparison with other vehicles. The
dollar amount includes the cost of the part(s) and labor (based on $50 per hour) for the
typical repair without extras or add-ons. Like the pricing information, replacement
costs can vary widely depending on region. Expect charges at a new-car dealership
to be slightly higher.
| Item Name | Repair Cost |
| A/C Compressor | $750 |
| Alternator | $345 |
| Automatic Transmission or Transaxle | $3,100 |
| Brakes | $890 |
| Clutch, Pressure Plate, Bearing | |
| Constant Velocity Joints | $2,700 |
| Exhaust System | $850 |
| Radiator | $880 |
| Shocks and/or Struts | $1,800 |
| Timing Chain or Belt | $960 |
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