2007 Hummer H3 electrical system problems
The 2007 Hummer H3 has 89 electrical system complaints filed with NHTSA — 27% of the year's total, and roughly flat versus the prior model year.
89
Electrical System complaints
27%
Share of year
2
Crash-involved
0
Related recalls
Electrical System complaints by year
What owners report
“TL* THE CONTACT OWNS A 2007 HUMMER H3. WHILE DRIVING APPROXIMATELY 60 MPH, THE CONTACT SMELLED BURNING PLASTIC. THE VEHICLE BECAME FILLED WITH THE ODOR. THE DEALER DIAGNOSED THAT THE CONNECTOR MODEL, BLOWER SWITCH, AND HVAC UNIT MELTED AND NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOTIFIED. THE…”
Common questions
How many electrical system complaints does the 2007 Hummer H3 have?
NHTSA has 89 complaints about the 2007 Hummer H3 electrical system — 27% of all complaints filed for that model year.
Related
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.