Understand the car behind the VIN

2021 Chevrolet Blazer Premier specifications

Build 3GNKBLR4-M · 2L 4cyl · All-wheel drive · Sport Utility Vehicle (SUV)

Explore the specifications recorded for VIN pattern 3GNKBLR4-M. Start here to understand this version, then check the full VIN for an individual car.

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NHTSA vPIC decode · Pattern-level specifications

  • Decoded Sep 9, 2026
  • 87 known VINs
  • 4 listings reported active
Stylized illustration of a suv / crossover body type
SUV / crossover body style · generic illustration, not this exact model
Engine
2L 4cyl In-Line
Transmission
Automatic
Drive
All-wheel drive
Body
Sport Utility Vehicle (SUV), 4-door
Seats
5
Weight class
Class 2E

The essentials, explained

Engine, transmission & body specifications

As filed by Chevrolet with NHTSA for this VIN pattern. Fields the filing does not record are left out entirely — a missing row means no recorded value, not a missing feature.

Engine

Displacement
2 L
Cylinders
4
Configuration
In-Line
Engine model
LSY
Valve train
Dual Overhead Cam (DOHC)
Turbocharged
Yes
Fuel type
Gasoline

Drivetrain

Drive type
All-wheel drive
Transmission
Automatic
Forward speeds
9
Brake system
Hydraulic

Body & chassis

Body class
Sport Utility Vehicle (SUV)/Multi-Purpose Vehicle (MPV)
NHTSA body type
MULTIPURPOSE PASSENGER VEHICLE (MPV)
Doors
4
Seats
5
Seat rows
2
Manufacturer
GENERAL MOTORS LLC

Weight rating

GVWR class
Class 2E
GVWR
6,001–7,000 lb

Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.

Driver assistance in the recorded decode

  • Forward collision warning Standard
  • Lane departure warning Standard
  • Lane keeping assistance Standard
  • Adaptive cruise control Optional
  • Blind spot warning Standard

Systems the filing does not record are not listed above. Check the window sticker of the exact car before you rely on any single feature.

Put the model year in context

Compare asking prices by model year

Explore 5 model years with VIN prefix 3GNKBLR4. These are different vehicles: price differences also reflect mileage, condition, equipment and the listings available. They are not a depreciation forecast.

Median asking prices · bars begin at $0

2022 $26,886
2023 $30,471
2024 $32,998
2025 $36,792

Highlighted: 2021, the model year on this page. Prices and update dates are specific to each linked year.

How this VIN pattern is read

A 17-character VIN carries two kinds of information: what was built, and which one it is. This page is the first kind — the nine highlighted positions.

VIN positions 1 through 8 read 3GNKBLR4 and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 describe the check digit, assembly plant and production sequence; they are not part of this pattern.

Positions Characters What they encode
1–3 3GN GENERAL MOTORS LLC · World manufacturer identifier
4–8 KBLR4 Model, body style, engine and restraint system
9 × Check digit — computed per vehicle, not part of the build
10 M Model year — 2021
11 × Assembly plant
12–17 ×××××× Production sequence number, unique to each vehicle

NHTSA safety ratings

Crash-test ratings apply to the tested vehicle configuration, not automatically to every version of this model.

Tested vehicle: 2021 Chevrolet Blazer SUV AWD

Overall

★★★★★ 5 / 5

Frontal crash

★★★★★ 5 / 5

Side crash

★★★★★ 5 / 5

Rollover

★★★★ ★ 4 / 5

1 recall campaign is recorded for the 2021 Blazer. Recalls are issued per VIN range — check the VIN of the car you are looking at, not the model.

From a version to your vehicle

Is this the car you’re looking at?

Enter the full VIN — the 17 characters on the windshield or title — to open the vehicle’s page.

Before you make it yours

Three checks beyond the specification

History of the exact car

A shared engine says nothing about accidents or odometer changes. Review records for the full VIN.

Start with the VIN ↑

Recall status

Model-year campaigns alone cannot confirm whether a car was affected or repaired. Check its individual VIN.

Check with NHTSA ↗

Condition & equipment

Confirm installed equipment and arrange an independent inspection. Specifications cannot show wear or past modifications.

Manufacturer reference library

Manuals & reference documents

2021 Chevrolet Blazer PDF Brochure

2021 · US · Model-year brochure. Equipment can vary by vehicle.

Open manufacturer document ↗

Documents may cover multiple versions. Check applicability to the individual vehicle; documents load only when opened.

Explore actual vehicles

87 known VINs for this pattern

Every VIN we have decoded to 3GNKBLR4-M is associated with this pattern in our records. Shared specifications do not mean shared history, condition or installed options.

  • 87 Known VINs
  • 4 Listings reported active

Neighboring configurations

Other factory configurations of the Blazer, each with its own recorded specifications. The set is fixed by the VIN patterns themselves, so it does not shuffle as prices or inventory move.

Keep going

Useful answers, without the guesswork

2021 Chevrolet Blazer: specification questions

What engine code is recorded for 3GNKBLR4-M?

The recorded engine model is LSY. This is pattern-level data; confirm the installed engine on a vehicle that may have been modified.

Is this an original window sticker?

No. This page summarizes decoded VIN-pattern specifications. An original sticker or build record is needed to verify the optional equipment of a particular car.

Are the known VINs a production total?

No. These are VINs observed in our records. The count does not establish total production or rarity.

Does a missing specification mean the feature is absent?

No. Missing fields mean that a value is not recorded in this decode. Check the individual vehicle and its manufacturer documentation.

Where this data comes from

Specification fields are decoded from the manufacturer's filings in the NHTSA vPIC database, keyed on VIN positions 1–8 and 10. We publish the filed values as they stand and leave out anything the filing does not record.

Vehicle counts come from the 87 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.

About the NHTSA vPIC data source ↗

Pattern decode updated September 9, 2026.