2021 Chevrolet Trailblazer Engine Problems
NHTSA component category: ENGINE · 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 engine 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
“On numerous occasions (typically when needing to accelerate into the flow of traffic), the Reduced Engine Power message and engine light came on, the car…”NHTSA complaint 11640587 — filed 02/04/2025
“IN January my fuel gage stopped working , unable to know how much gas I had. The fuel pump and floater needed to be replaced…”NHTSA complaint 11637782 — filed 01/22/2025
“Reduced engine power, code P0014. Camshaft actuator oil control valve bolt stuck open. All the signs and symptoms per bulletin released by NHSTA to repair…”NHTSA complaint 11623400 — filed 11/04/2024
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Engine complaints by year filed
Frequently asked questions
Does the 2021 Chevrolet Trailblazer have engine problems?
Engine is the #4 most-reported problem area on the 2021 Chevrolet Trailblazer: 33 of 181 complaints on file (18.2%). 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 engine category include?
NHTSA assigns each complaint to standard component categories; this page reports the ENGINE category exactly as NHTSA defines and records it.
