2021 Chevrolet Trailblazer 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 181 complaints citing each category; one complaint can cite several. Full breakdown on the 2021 Chevrolet Trailblazer overview page.
What owners report
“I have had this vehicle at the garage for the 4th time in 2 months for the same issues. It would not start. the fuse…”NHTSA complaint 11632626 — filed 12/27/2024
“2021 Chevy Trailblazer When I go to park my car, there is a constant error of 'Shift to Park'. The car is already in park…”NHTSA complaint 11628521 — filed 12/03/2024
“While driving the car will cut off and on real quick. The headlights will flash on their own. Security systems cuts off and the brakes…”NHTSA complaint 11627856 — filed 11/28/2024
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Electrical System complaints by year filed
Frequently asked questions
Does the 2021 Chevrolet Trailblazer have electrical system problems?
Electrical System is the #2 most-reported problem area on the 2021 Chevrolet Trailblazer: 37 of 181 complaints on file (20.4%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2021 Chevrolet Trailblazer have in total?
181 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 7 involved a crash, 3 involved a fire, 5 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.
