2006 Hummer H3 engine problems
52 owner complaints filed with NHTSA name the engine on the 2006 Hummer H3 — 14% of all complaints for this model year.
What owners report
“On the electrical, I refer to my air conditioning and heater. When I have my air selection to coldest and I drop 1 click for it to be less cool, my heater turns on and at times it smells like something burning. I have to turn it off . On the engine, after I hit 90,000 miles, I have to fill up my…”
filed Jan 2, 2025
“Was heading home from work and the 2006 Hummer H3 shut off while traveling in the middle of traffic was able to cruise in Nuetral until I could stop to start car again started car and yet again I receive a cylinder misfire code which has been repaired on multiple attempts still no success. I am…”
filed Aug 27, 2024
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine problems in other H3 years
| Year | Reports | Share |
|---|---|---|
| 2009 H3 | 9 | 13% |
| 2008 H3 | 18 | 16% |
| 2007 H3 | 44 | 19% |
Other reported problem areas on the 2006 Hummer H3
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.