| 1 | 0 | 3 | 4 | 3 | 4 |
2007 Hummer H3 repairs by problem area
Engine (36%)
Transmission and Drivetrain (21%)
Brakes and Traction Control (5%)
Suspension and Steering (12%)
Electrical and Air Conditioning (19%)
Paint, Rust, Leaks, Rattles, and Trim (6%)
Other (1%)
Chart based on 84 repairs.
2007 Hummer H3 engine repair cost distribution
$2500+ (22%)
$1000 - $2499 (7%)
$500 - $999 (19%)
$100 - $499 (30%)
< $100 (22%)
Chart based on 27 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2007 Hummer H3 4dr SUV
242-horsepower 3.7L I5 5-speed manual AWD w/low range
| 118000 mi US $55 |
Water Pump leaking (bearing) |
| 82000 mi US $300 |
Servo valve in sensor showed engine light, design change made a $100 part cost $200 with $100 installation. |
| 95000 mi US $807 |
Radiator needed to be replaced as well as a u joint. |
| 67000 mi US $2600 |
Cylinder number 5 misfiring, valves stuck. Entire block needed rebuilt. This is a common problem with this engine and GM is ignoring. |
2007 Hummer H3 4dr SUV
242-horsepower 3.7L I5 4-speed automatic AWD w/low range
| 58000 mi | Master cylinder failure - have to REPLACE Engine |
| 62000 mi US $2850 |
Complete cylinder head replacement. Top engine tear-down and reassembly. Due to engine misfire fault code and rough idle concerns. Poor acceleration after long haults at stop signals. |
| 85000 mi US $250 |
At 90000 miles Radiator's plastic top tank seams started leaking coolant and loss of cooling system pressure. |
| 92700 mi US $5000 |
Poor engine cylinder head design at manufacturer. Engine studder and misfire at idle while in gear with foot on brake.Replaced cylinder head w/ new and problem returned after appx. 4000 miles. |
| 112840 mi R 180 |
Thermostat replacement. |
| 99200 mi C $300 |
Kept shutting down while driving, traction control failing, service stabilizers |
| 107840 mi C $850 |
broken water pump |
| 92500 mi US $3000 |
Cylinder Head is bad. Needs to be completly replaced. |
| 58200 mi US $1290 |
Water pump replacement |
| 67000 mi US $1200 |
Radiator split apart and had to be replaced |
| 67500 mi US $600 |
Catastrophic water pump failure |
| 77000 mi US $100 |
Lower radiator hose and thermostat |
| 36300 mi | hard idle, replaced stock air intake with k/n air intake, also added g force power chip. idle now better, gas mileage up 6 to 7 m.p.g. |
| 44200 mi US $300 |
Pass lock system,replaced ignition tumbler. |
| 39500 mi | Check engine light on. Small evap leak found. Smoke test. Dealer replaced vent solenoid and gas cap. Retested, no leaks found. |
| 69500 mi | Radiator went bad, and the Hummer dealer replaced it and flushed the cooling system for free.. Wright Hummer in Wexford PA is the best dealer I have seen that takes customer service serious.. They are #1. |
| 48200 mi | Catalytic converter was replaced. |
| 60000 mi US $240 |
Can position sencor. |
| 109000 mi US $417 |
Water pump replacing. No power on acceleration. Sluggish. Still dealing with it. |
| 109000 mi US $777 |
Loud rattling. Replaced motor mounts and transmission mount. |
| 86000 mi US $3899 |
catalytic converter bracket broken. Bolts broken off in head. replaced head and catalytic converter because bracket and converter are one piece. |
| 97600 mi US $9000 |
replaced radiator replaced engine, $6000 |
| 68000 mi US $50 |
Engine Light On; vehicle running sluggish |
| 82000 mi US $600 |
Overheating replaced radiator. |
See TrueDelta's information for all Hummer models.
