We don't have a lot of Hummer H3 electrical problems on file — feel free to add yours here. The most common H3 electrical problems cost $500 to fix & occur at 77,000 miles. Click on a year below.

Worst Electrical Problems
passlock light on preventing engine to start 2006 Hummer H3
would not start 2008 Hummer H3
engine won't turn over, won't start 2006 Hummer H3