2006 Hummer H3 Electrical System Problems
NHTSA component category: ELECTRICAL SYSTEM · data through 07/12/2026
Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
How electrical system ranks on this vehicle
Share of the 360 complaints citing each category; one complaint can cite several. Full breakdown on the 2006 Hummer H3 overview page.
What owners report
“OVERHEATED AND MELTED RESISTOR AND WIRING HARNESS FOR THE HVAC BLOWER MOTOR ON A 2006 HUMMER H3. THIS HAS HAPPENED TO MY VEHICLE AND A…”NHTSA complaint 10404471 — filed 06/05/2011
“PURCHASED 2006 H3 WITH 58K ON IT. AT 61K THE A/C BLOWER WOULD INCREASE IN SPEED FOR NO REASON THEN GO BACK TO ITS SETTING…”NHTSA complaint 10399649 — filed 05/09/2011
“I HAVE A 2006 HUMMER H3, EVERY FEW WEEKS OR SO THE MOTOR WILL TURN OVER BUT WILL NOT START. I LET IT SIT FOR…”NHTSA complaint 10396621 — filed 04/18/2011
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Electrical System complaints by year filed
Frequently asked questions
Does the 2006 Hummer H3 have electrical system problems?
Electrical System is the most-reported problem area on the 2006 Hummer H3: 90 of 360 complaints on file (25%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2006 Hummer H3 have in total?
360 complaints were on file with NHTSA as of 07/12/2026. Across all categories, 10 involved a crash, 27 involved a fire, 8 reported injuries, and 1 reported deaths.
What does NHTSA's electrical system category include?
NHTSA assigns each complaint to standard component categories; this page reports the ELECTRICAL SYSTEM category exactly as NHTSA defines and records it.
