2005 Chevrolet Trailblazer EXT 370 Electrical System Problems
NHTSA component category: ELECTRICAL SYSTEM · data through 07/14/2026
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 237 complaints citing each category; one complaint can cite several. Full breakdown on the 2005 Chevrolet Trailblazer EXT 370 overview page.
What owners report
“2005 CHEVROLET TRAILBLAZER INSTRUMENT (SPEEDOMETER) CLUSTER IS NOT WORKING. APPARENTLY THIS IS A COMMON DEFECT WITH THE TRAILBLAZER. IT SIMPLY STOPPED WORKING, AND NOW I…”NHTSA complaint 10375313 — filed 01/09/2011
“AS YOU CAN SEE FROM BELOW THE COMPLAINT, SEEMS I GOT A CALL FROM NIKKI AT GM OR CHEVY AND THEY STATED I NEED TO…”NHTSA complaint 10371164 — filed 12/18/2010
“LIGHTS DIMMING AND FLASHING ALTERNATOR NOT CHARGING, WIRING PROBLEM, DEALER HAS NO ANSWER. I HAVE VEHICLE JUST STARTED THIS AT 74000 MILES, WAS FINE UP…”NHTSA complaint 10370943 — filed 12/16/2010
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Electrical System complaints by year filed
Frequently asked questions
Does the 2005 Chevrolet Trailblazer EXT 370 have electrical system problems?
Electrical System is the most-reported problem area on the 2005 Chevrolet Trailblazer EXT 370: 69 of 237 complaints on file (29.1%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2005 Chevrolet Trailblazer EXT 370 have in total?
237 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 7 involved a crash, 1 involved a fire, 9 reported injuries, and none 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.
