2021 Chevrolet Blazer 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 123 complaints citing each category; one complaint can cite several. Full breakdown on the 2021 Chevrolet Blazer overview page.
What owners report
“Car was running fine yesterday, today does not want to start. Thought it was the battery, bought anew battery. Still wouldn't start. Rest of cat…”NHTSA complaint 11699684 — filed 11/16/2025
“Request for Recall Review â 2021 Chevrolet Blazer Steering Assist and Cooling Fan Issue Hello, I am writing to report a recurring issue with my…”NHTSA complaint 11692416 — filed 10/09/2025
“The vehicle has 14,000 miles on it and the fuel pump control module has gone out on it. This happened while away from home and…”NHTSA complaint 11675095 — filed 07/21/2025
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 Blazer have electrical system problems?
Electrical System is the most-reported problem area on the 2021 Chevrolet Blazer: 36 of 123 complaints on file (29.3%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2021 Chevrolet Blazer have in total?
123 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 5 involved a crash, 1 involved a fire, 6 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.
