BrakeNewsOwner complaints, read early

Your vehicle report

2021 Chevrolet Blazer

The problems owners report. The recalls to check. The evidence behind each.

NHTSA data through October 2026View original NHTSA data Change vehicle

Your vehicle at a glance

Complaint patterns and official recall records, kept distinct.

Owner complaints
141
Received Mar 2021 to Oct 2026
Official recalls listed
1
Naming this model year; check your VIN for applicability
BrakeNews flagged problems
3
Statistical signals, not official defect findings or recalls

Owner reports

Most reported problems

  1. 1
    Head gasket leaks coolant into engine14 complaints · 9.9% of this vehicle’s complaints
  2. 2
    Power steering cuts out while driving12 complaints · 8.5% of this vehicle’s complaints
  3. 3
    Fuel pump fails and engine stalls7 complaints · 5.0% of this vehicle’s complaints
See all reported problems

Official NHTSA records

Recalls to check

  • Recall #20V811000General 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 incorrect bolt was used, the seat belt may not be properly attached to the vehicle.
View recall details

BrakeNews signals

Flagged complaint patterns

Unusual complaint patterns with no matched recall yet. A flag does not mean a recall will happen.

How flags are identified

Complaint counts reflect reports submitted to NHTSA, not failure rates or a reliability ranking. Reported in these complaints: 6 crashes, 1 fire, 7 people injured, 0 deaths.

Explore by system

Where do owners report problems?

Choose an area on the car or a system below to explore the reported problems.

Schematic car with five system shortcutsGeneric side view, with the front on the left. Numbered links explore engine, brakes, steering, electrical, and body complaints. Text controls below provide the same choices.12345FRONTSCHEMATIC VIEW

Illustrative only; not this vehicle’s exact design. Areas represent complaint categories, not confirmed defective parts.

View selected problems

Showing all 14 listed problems by system.

Engine & powertrain

3 more problems

Brakes

Electrical & lights

Airbags, belts & seats

No problems in this category meet this page’s listing criteria. This does not establish that the system is free of problems.

Steering, suspension & tires

Body, doors & glass

No problems in this category meet this page’s listing criteria. This does not establish that the system is free of problems.

Driver assistance

No problems in this category meet this page’s listing criteria. This does not establish that the system is free of problems.

Other

Complaint history

When NHTSA received these reports. Changes in reporting alone do not establish a change in failure rates.

Complaints received about the 2021 Chevrolet Blazer
8
Show as a table
MonthComplaints
March 20212
April 20210
May 20212
June 20212
July 20213
August 20211
September 20210
October 20211
November 20210
December 20210
January 20220
February 20221
March 20220
April 20220
May 20220
June 20220
July 20220
August 20220
September 20220
October 20221
November 20220
December 20222
January 20231
February 20232
March 20230
April 20230
May 20230
June 20232
July 20232
August 20232
September 20232
October 20230
November 20231
December 20230
January 20242
February 20240
March 20241
April 20240
May 20243
June 20241
July 20240
August 20241
September 20240
October 20242
November 20243
December 20241
January 20253
February 20251
March 20258
April 20254
May 20257
June 20255
July 20256
August 20252
September 20258
October 20257
November 20254
December 20255
January 20262
February 20262
March 20264
April 20266
May 20263
June 20263
July 20264
August 20264
September 20266
October 20266
Total141

Problems owners report

Listed groups have at least 3 complaints. The page includes the 20 largest groups plus any additional flagged groups; some complaints are not assigned to a group.

ProblemComplaintsShareShare ratioStatus
Head gasket leaks coolant into engine149.9%3.5×
Power steering cuts out while driving128.5%5.8×BrakeNews flag · First signal: Jan 2025
Model estimate of a matched recall within 24 months: 1.8%
Fuel pump fails and engine stalls75.0%3.6×BrakeNews flag · First signal: Dec 2025
Model estimate of a matched recall within 24 months: 1.0%
Brake booster fails, leaving stiff pedal75.0%8.6×BrakeNews flag · First signal: Jun 2025
Model estimate of a matched recall within 24 months: 1.2%
Vehicle catches fire from wiring64.3%2.8×
Tires blow out or tread separates53.5%–
Fuel tank or line leaks gasoline53.5%2.4×
Chevrolet Silverado loses power and hesitates53.5%2.6×
Infotainment screen ghost-touches and changes on its own32.1%–
Automatic transmission shifts unexpectedly or slips32.1%1×
Engine suddenly shuts off while driving32.1%1.3×
Instrument cluster or speedometer fails32.1%–
Air conditioner blows hot air or fails32.1%6.1×
Brakes make grinding or squealing noise32.1%–

AI groups complaints by meaning; the groups are approximate. Share ratio compares the problem’s share of this vehicle’s complaints with its share on other vehicles over the last 24 months (shown from 3 recent complaints). A 2× ratio means twice the complaint share, not twice the failure risk. Flags mark unusual shares or recent surges after an AI review of the complaint content. “First signal” does not mean the pattern has persisted continuously.How recall estimates are calculated.

Recalls

  • NHTSA recall #20V811000December 23, 2020470 vehicles affected

    seat belts; seat belts: critical fasteners

    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 incorrect bolt was used, the seat belt may not be properly attached to the vehicle.

    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.

    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.

Other model years

About this data

NHTSA complaints and recalls through October 2026. Complaints are counted once each, however many components they name. Original complaints are on NHTSA's page for the 2021 Chevrolet Blazer.

Problem groups are formed by AI and may be approximate. BrakeNews flags unusual complaint patterns; they are not official defect findings. Investigation reports are written and checked by AI, with no human review. Owner reports do not establish that a defect exists.

Read the methodology and track record · Check current recalls by VIN