NHTSA lists 136 complaints for the 2021 Chevrolet Blazer, 6 of them mention a crash and 1 mention a fire. 5 complaints mention an injury, with 7 injuries and 0 deaths reported.
Data build 2026-10-09.
NHTSA lists this vehicle as CHEVROLET BLAZER.
At a glance
Complaints
136
With crash
6
With fire
1
With injury (complaints)
5
Injuries
7
Deaths
0
Recalls
1
Do not drive recalls
0
Park outside recalls
0
Recall potential units (maximum)
470
Investigations
0
Open investigations
0
Manufacturer communications
813
Complaints per 100k sold unavailable. No sales source is available for this record.
Where the complaints are
Top systems
System
Complaints
Share of this vehicle's complaints
ENGINE
42
30.9%
ELECTRICAL SYSTEM
39
28.7%
UNKNOWN OR OTHER
20
14.7%
SERVICE BRAKES
19
14.0%
POWER TRAIN
18
13.2%
FUEL/PROPULSION SYSTEM
17
12.5%
STEERING
15
11.0%
FORWARD COLLISION AVOIDANCE
7
5.1%
TIRES
5
3.7%
SUSPENSION
4
2.9%
Top subsystems
System
Subsystem
Complaints
FORWARD COLLISION AVOIDANCE
AUTOMATIC EMERGENCY BRAKING
4
FORWARD COLLISION AVOIDANCE
WARNINGS
2
LANE DEPARTURE
ASSIST
2
STRUCTURE
BODY
2
TIRES
TREAD/BELT
2
BACK OVER PREVENTION
REARVIEW SYSTEM BRAKING
1
ELECTRICAL SYSTEM
CYBERSECURITY
1
ELECTRICAL SYSTEM
INSTRUMENT PANEL
1
ENGINE AND ENGINE COOLING
COOLING SYSTEM
1
EQUIPMENT
ELECTRICAL
1
One complaint can name several systems, so shares can add to more than 100 percent.
Confidence is the model's own probability for the label it chose (0 to 1), not accuracy.
Model-generated labels on tagged complaints only. Model years 2013 and newer are tagged in full; 2012 in part (see tagged_share); earlier model years have no tags. NHTSA's own flags remain separate in the complaints block.
Defect: General Motors, LLC (GM) is recalling certain 2020 Chevrolet Bolt EV and 2021 GMC Canyon and Sierra 1500, 2500 and 3500, Yukon, Yukon XL, Cadillac Escalade and Escalade ESV and Chevrolet Blazer, Camaro, Colorado, Equinox, Silverado 1500, 2500 and 3500, Suburban and Tahoe vehicles. Incorrect bolts may have been used at one or more fastening locations to secure the seat belts to the vehicle. If an (excerpt)
Consequence: If a seat belt assembly is not properly attached to the vehicle, the seat belt may not properly restrain an occupant in the event of a crash, increasing the risk of injury. (excerpt)
Remedy: GM will notify owners, and dealers will replace the suspect bolts, free of charge. The recall began January 29, 2021. Owners may contact GMC customer service at 1-800-462-8785, Cadillac customer service at 1-800-458-8006, or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N202322230. (excerpt)
Do not drive: No. Park outside: No.
Investigations
0 investigations; 0 open.
Manufacturer communications
813 manufacturer communications.
Communications by system
System
Count
EQUIPMENT
217
ELECTRICAL SYSTEM
187
ENGINE AND ENGINE COOLING
135
UNKNOWN OR OTHER
110
POWER TRAIN
92
ENGINE
87
WHEELS
36
BACK OVER PREVENTION
33
11037555
Date: 2026-09-26. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
11037253
Date: 2026-09-04. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
11036392
Date: 2026-08-20. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
11035340
Date: 2026-07-21. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
PI to help diagnose A/C concern
11034769
Date: 2026-06-23. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
11032763
Date: 2026-05-11. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
11032764
Date: 2026-05-11. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
Pi created to provide GM dealers with information on gathering information for projection issue
11030974
Date: 2026-04-01. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This preliminary information communicates information about how to determine if a wheel and tires size change is available.
11030532
Date: 2026-03-21. Type: Over The Air. Systems: UNKNOWN OR OTHER.
Improvements to OnStar functionality.
11030092
Date: 2026-03-09. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
Notes on this record
Complaints from the API and bulk file are merged and deduplicated by ODI number; the API alone misses records.
System and subsystem counts are numbers of distinct complaints, recalls or communications that name them. One record can name several systems, so shares across systems can add to more than 100 percent; a single share never exceeds 100 percent.
Recalls are counted once per campaign, investigations once per action and manufacturer communications once per NHTSA id, even when NHTSA lists several model names for the same record.
A sales denominator is a calendar-year proxy, not the population of vehicles still in use. Rates are copied from verified pipeline output.