| 1 | 0 | 3 | 4 | 3 | 4 |
2006 Hummer H3 repairs by problem area
Engine (32%)
Transmission and Drivetrain (12%)
Brakes and Traction Control (3%)
Suspension and Steering (11%)
Electrical and Air Conditioning (23%)
Paint, Rust, Leaks, Rattles, and Trim (15%)
Other (5%)
Chart based on 136 repairs.
2006 Hummer H3 engine repair cost distribution
$2500+ (3%)
$1000 - $2499 (6%)
$500 - $999 (3%)
$100 - $499 (22%)
< $100 (67%)
Chart based on 36 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2006 Hummer H3
Engine not specified
| 53000 mi | Replace accelerator pedal sensor. |
| 58000 mi | Coolant also leaking. |
| 43000 mi | Started H3 and it shut down, would not start, called OnStar for diagnostic check, found ECM needed replaced as well as a new battery. Roll back picked it up and delivered to dealer. Did not cost me a dime. |
2006 Hummer H3 4dr SUV
220-horsepower 3.5L I5 5-speed manual AWD w/low range
| 98000 mi US $7200 |
A Rod in the engine failed. The entire engine was replaced along with a new clutch. |
2006 Hummer H3 4dr SUV
220-horsepower 3.5L I5 4-speed automatic AWD w/low range
| 89200 mi US $2000 |
Fuel Tank leaked had to replace it. Upstream Oxygen Sensor bad, had that replaced. Fuel pump rusted, connectors broke and had to replace pump and a fuel hose. |
| 95000 mi US $15 |
Radiator Cap Leak |
| 80000 mi | engine wouldn't start--fuel pump not pumping. I removed the circuit breaker and reinstalled---pump started pumping and no trouble since |
| 80000 mi | engine would turn over but not start--fuel pump not operating |
| 93000 mi | Replaced thermostat. |
| 99000 mi US $40 |
Error code P00014 timing error. Replaced crankshsft solenoid. |
| 72000 mi US $140 |
check engine light on, OBD II code indicated a bad evap solenoid, also got messages about fuel cap being loose. Replaced the evap solenoid, issue fixed. |
| 74000 mi US $250 |
Check engine light was on and the thermostat was replaced which fixed the problem. |
| 78300 mi US $483 |
Radiator was leaking at the top. Replaced radiator. |
| 95000 mi US $50 |
Hard to start in cold. Replaced spark plugs. |
| 7200 mi | Cylinder head replaced- under warranty. |
| 10000 mi | The engine light came on and had to be completly reset. The computer had blown a chip. |
| 82000 mi | Needed Heads |
| 139200 mi US $307 |
Slighty overheating, thought it was the thermostat so I had it replaced at a local shop, was not thermostat, the thermostat guage went out and had to be readjusted for $100 at dealership. |
| 137000 mi US $976 |
Started driving about a mile down the road, went dead, would not fully start back up. Would only start up for about 2 seconds, then would do a horrible idle and go dead. Ended up towing it and replacing the fuel pump. |
| 71000 mi US $1000 |
Power steering belt replaced; worn out |
| 47140 mi C $350 |
replace spark plug coil |
| 25000 mi | Engine blown- 80% leakdown in #3 cyl and significant leakdown in the remaining 4. Started with intermittant CEL's and progressed to very rough idle, power loss, and single digit fuel economy. |
| 68000 mi US $300 |
crack in top of radiator assembly. replaced the upper assembly at dealer. |
| 35000 mi | Engine light. Took in. Code: P300. Did leak down test. Confirmed - #3 cylinder head has a 70% leak. Per TSB - replace cylinder head. Parts ordered. Will take 3 weeks to get. 15 other H3's ahead of me for replacement on head. |
| 37000 mi | Install Cylinder Head from February visit. |
| 17980 mi | engine shuttered on initial start-up each morning. Dealer reflash of ECM. Shutter now gone |
| 35340 mi | Check engine light on, due to emission evaporation, vent sensor malfunction. |
| 50000 mi | Traction control can be turned on and off on vehicle. Traction control was not able to be turned off. PBM computer module defective. |
| 67000 mi US $70 |
EVAP canister failed and needed replacement... |
| 76200 mi US $30 |
02 sensor fail. |
| 86000 mi US $99 |
02 Sensor fail again... This was again related to DMV inspection failure. I have made several attempts to pass so far and waiting for codes to clear b4 police issue violations for overdue inspection dates. |
| 95000 mi US $395 |
Ignition key could not be removed from ignition. Replaced two (2) sensors, did not correct problem. Disconnected brake switch. |
| 10000 mi | Traction control problem ...they could not suplicate in the shop...Happened again today, Feb 10th, got code from onstar this time, will make another appointment |
| 10000 mi | Needed sensors replaced. |
| 14400 mi | ECM replaced. |
2006 Hummer H3 4dr SUV
| 162000 mi US $3895 |
Replaced engine do to wrong oil filter was blown off and seized engine Broken Motor Mounts Replaced Both Map Sensor |
2006 Hummer H3 4-door
5-cylinder automatic 4WD
| 7000 mi | Needs new head in cylinder one |
| 9000 mi | Needs new head in cylinder one. Repair period started in May and finished over a week later in June. |
| 79000 mi US $400 |
Dreaded cylinder head problem found mainly in the 06 H3. |
2006 Hummer H3 4-door
4-cylinder automatic AWD
| 3000 mi | Vehicle stability failure. Please service message came on and I was unable to switch from 4wd drive. These buttons did not work. Mechanic said it was the encoder motor. |
2006 Hummer H3 2-door
Engine not specified
| 21000 mi | Bad cylinder head. Ordered replacement. |
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