Hummer H3 information
Owner's reviews
What real owners think of the H3. The good things and the bad ones
Owner's ManualsDownload the owner's manual of your Hummer H3
Service and Repair ManualsService and repair manuals, diagrams and more
Useful guidesOil change, timing belt, check engine light and more
Fuse box diagramsExplore an interactive fuse box diagram of your Hummer H3
Problems and issues19 reports of problems and solutions from other car owners
Latest problems
Won’t start sometimes
Hummer H3 2007 3.7litre
Sometimes car won’t start. Everything turns over like normal but it just won’t start. Leave it for 15min and starts straight away. Has anyone else had this issue?
Drivers side window and power lock switch on drivers side door panel
Hummer H3 2009
My driver's side window does not go up or down and the button for my power lock on the driver side door panel does not work I've replaced the control panel on the driver side door didn't fix it I also…
Crank no start
Hummer H3 2006
Went up a hill one night and car made a weird revving sound and died. I was able to start it after 4 to 5 min and went 5 min home. The next morning I cranked it and it started. I put it in drive and i…
Find what you needed?
Thank you!
