- What you'll get from Chevrolet Blazer VIN check?
- Chevrolet Blazer Vehicle History Risk Factors
- Characters 1-3 of a Chevrolet Blazer VIN
- List of WMI Codes for a Chevrolet Blazer
- Characters 4-8 are the Vehicle Descriptor Section (VDS) of a Chevrolet Blazer VIN
- Character 9 is the "check digit" in a Chevrolet Blazer VIN.
- 10th Character in the Chevrolet Blazer VIN — Year Code
- 11th Character in the Chevrolet Blazer VIN — Plant Code(s)
- Known Chevrolet Blazer Assembly Factory VIN Code(s)
- VIN Characters 12 - 17 of a Chevrolet Blazer
- How to find a Chevrolet Blazer's VIN?
- Sample VIN Decode Report for a Chevrolet Blazer
What you’ll get from Chevrolet Blazer VIN check?
- Model Year: The VIN can reveal the vehicles model year being the year 2020, providing insights into the age and potential historical value of the vehicle.
- Body Class and Vehicle Type: It offers insights into the vehicle’s classification, indicating whether it’s a Sport Utility Vehicle (SUV)/Multi-Purpose Vehicle (MPV) or another type, which helps understand the vehicle’s design and potential use cases.
- Safety Features: The VIN often highlights the inclusion of standard safety technologies such as Anti-lock Braking System (ABS), Blind Spot Warning (BSW), and whether features like Adaptive Cruise Control (ACC) are optional or standard, offering a glimpse into the vehicle’s safety equipment.
- Engine Specifications: Details about the engine such as it being a 2.0L In-Line 4-cylinder engine with a turbocharger and specific model code (LSY), are encoded within the VIN, providing essential information on vehicle’s powertrain.
- Transmission and Drive Type: The VIN reveals that the vehicle uses an automatic transmission with 9 speeds and is equipped with All-Wheel Drive (AWD), which can be crucial for understanding the vehicle handling and performance characteristics.
- Fuel Type and Efficiency Technology: It may indicate that the vehicle runs on Gasoline and includes efficiency-enhancing features like Variable Valve Timing (VVT), directly affecting fuel economy and performance.
- Plant Information and Production Location: The VIN discloses the plant city as Ramos Arizpe, located in Mexico, offering tracing of where the vehicle was assembled which can be important for understanding regional differences or production specifics.
Chevrolet Blazer Vehicle History Risk Factors
Chevrolet’s reliability is model-dependent — the Silverado and Suburban are among the most durable vehicles in their segments, while some car-based models have more checkered histories. A Bumper check on a used Chevrolet is particularly valuable for the following:
AFM/DoD lifter failures on 5.3L V8 engines (2007–2021 Silverado, Tahoe, Suburban). GM’s Active Fuel Management system, which deactivates cylinders at highway speeds, caused widespread lifter and camshaft failures in this engine generation. The repair cost ($2,000–$5,000) makes this one of the most expensive used-vehicle surprises in any segment. Service records showing lifter replacement or an AFM delete kit are significant items to verify before purchase.
Ignition switch recall (2005–2014 multiple models). GM’s ignition switch recall — one of the most significant safety-related recalls in automotive history — affected Malibus, Cobalts, and several other models. Affected switches could move out of the “run” position while driving, cutting power to safety systems including airbags. Verify recall compliance on any Chevrolet from this era.
Transmission shudder on 8-speed automatic (2015–2019 Silverado, Colorado). GM’s 8L90 and 8L45 eight-speed automatics generated extensive owner complaints and TSBs related to torque converter shudder, especially at low speeds. This is well-documented and frequently appears in service records.
Rust on older Silverado and Colorado frames. Like other full-size trucks, older Chevrolet pickups from rust-belt states can have significant frame deterioration. A registration and ownership history in the Bumper report is your first indicator — a truck that’s spent decades in Minnesota or Michigan is a different proposition than one from Arizona.
A Bumper VIN check shows accident history, title brands, flood damage, and odometer records for this specific vehicle.
How to decode a Chevrolet Blazer VIN
Characters 1-3 of a Chevrolet Blazer VIN
World Manufacturer Identifiers (WMIs) are unique codes assigned to vehicle manufacturers to identify the country of origin, manufacturer, and type of vehicle. For the Chevrolet Blazer, the WMIs 1GN and 3GN highlight its production under General Motors LLC in Warren, Michigan, United States, categorizing it as a Multipurpose Passenger Vehicle (MPV). The 1GN series was used for models produced between 1987 and 2005, whereas the 3GN series has been in use for newer models from 2019 to 2024. These codes serve as a key to effectively pinpointing the vehicle’s manufacturing details, ensuring specificity and traceability within the automotive industry.
List of WMI Codes for a Chevrolet Blazer
WMI: 1GN
- Model Years Covered: 1987-2005
- Example VIN: 1GNCS18RXH0125493
- Manufacturer Name: General Motors LLC
- Vehicle Type: Multipurpose Passenger Vehicle (MPV)
- City: Warren
- State or Province: Michigan
- Country: United States
WMI: 3GN
- Model Years Covered: 2019-2024
- Example VIN: 3GNKBKRS0KS531415
- Manufacturer Name: General Motors LLC
- Vehicle Type: Multipurpose Passenger Vehicle (MPV)
- City: Warren
- State or Province: Michigan
- Country: United States
WMI: 1G8
- Model Years Covered: 1981-1986
- Example VIN: 1G8DC18HXBF108046
- Manufacturer Name: General Motors LLC
- Vehicle Type: Passenger Car
- City: Warren
- State or Province: Michigan
- Country: United States
WMI: 1GC
- Model Years Covered: 1984-1986
- Example VIN: 1GCEK18H2EF105692
- Manufacturer Name: General Motors LLC
- Vehicle Type: Truck
- City: Warren
- State or Province: Michigan
- Country: United States
Characters 4-8 are the Vehicle Descriptor Section (VDS) of a Chevrolet Blazer VIN
These characters correspond to components like:
- Engine type
- Transmission
- Model or trim
- Body style
- Gross vehicle weight range
Chevrolet’s Vehicle Descriptor Section encodes body style, restraint system, engine type, and series level across its Silverado, Equinox, Malibu, and Tahoe lineups. On Silverados, the VDS is particularly useful for confirming cab style (regular, double, or crew cab), bed length, and engine variant — important because a 5.3L V8 Silverado and a 4.3L V6 from the same model year can look identical from the exterior. For the Equinox and Traverse, the VDS distinguishes between engine variants that differ significantly in fuel economy, towing capacity, and long-term reliability profiles. When comparing two Chevrolets with similar prices, always cross-reference VDS characters to confirm you’re comparing equivalent specifications.
Auto manufacturers have some discretion to decide how they want to code this section, but its contents and decoded results are generally consistent.
Character 9 is the “check digit” in a Chevrolet Blazer VIN.
Based on a formula developed by the US Department of Transportation, it helps reduce fraud by ensuring the validity of the VIN.
10th Character in the Chevrolet Blazer VIN — Year Code
| Year Code | Year |
|---|---|
| R | 2024 Chevrolet Blazer |
| P | 2023 Chevrolet Blazer |
| N | 2022 Chevrolet Blazer |
| M | 2021 Chevrolet Blazer |
| L | 2020 Chevrolet Blazer |
| K | 2019 Chevrolet Blazer |
| 5 | 2005 Chevrolet Blazer |
| 4 | 2004 Chevrolet Blazer |
| 3 | 2003 Chevrolet Blazer |
| 2 | 2002 Chevrolet Blazer |
| 1 | 2001 Chevrolet Blazer |
| Y | 2000 Chevrolet Blazer |
| X | 1999 Chevrolet Blazer |
| W | 1998 Chevrolet Blazer |
| V | 1997 Chevrolet Blazer |
| T | 1996 Chevrolet Blazer |
| S | 1995 Chevrolet Blazer |
| R | 1994 Chevrolet Blazer |
| P | 1993 Chevrolet Blazer |
| N | 1992 Chevrolet Blazer |
| M | 1991 Chevrolet Blazer |
| L | 1990 Chevrolet Blazer |
| K | 1989 Chevrolet Blazer |
| J | 1988 Chevrolet Blazer |
| H | 1987 Chevrolet Blazer |
| G | 1986 Chevrolet Blazer |
| F | 1985 Chevrolet Blazer |
| E | 1984 Chevrolet Blazer |
| D | 1983 Chevrolet Blazer |
| C | 1982 Chevrolet Blazer |
| B | 1981 Chevrolet Blazer |
11th Character in the Chevrolet Blazer VIN — Plant Code(s)
Known Chevrolet Blazer Assembly Factory VIN Code(s)
| Plant Code | Plant City | Plant State | Plant Country | Plant Company Name | Example VIN |
|---|---|---|---|---|---|
| 0 | Pontiac | Michigan | United States | Na-Truck Platform | 1GNCS18RXH0125493 |
| 2 | Moraine | Ohio | United States | Na-Truck Platform | 1GNDT13Z1M2121971 |
| 8 | Shreveport | Louisiana | United States | Na-Truck Platform | 1GNCT18R1H8134906 |
| F | Flint | Michigan | United States | Na-Truck Platform | 1GNEV18K0HF145641 |
| J | Janesville | Wisconsin | United States | Na-Truck Platform | 1GNEK18K0NJ316485 |
| K | Linden | New Jersey | United States | Gm Truck Group | 1GNCS18W6SK252761 |
| S | Ramos Arizpe | Mexico | 3GNKBKRS0KS531415 |
VIN Characters 12 - 17 of a Chevrolet Blazer
The final 6 characters in a Chevrolet Blazer’s 17-digit VIN are its serial number, which will be unique to every vehicle.
Want to unlock even more detailed info about your vehicle?
How to find a Chevrolet Blazer’s VIN?
Locating the VIN number on your Chevrolet Blazer is key for identification. Here’s how to find it:
- Look on the dashboard near the windshield on the driver’s side of your Chevrolet Blazer, where you can typically see the VIN through the glass.
- Examine the driver’s side door jamb of your Chevrolet Blazer, where the door hinges meet the body of the vehicle. The VIN might be located on a sticker or plate in this area.
- Check the vehicle registration documents or the insurance card for your Chevrolet Blazer, as these documents usually include the VIN.
- Review the Chevrolet Blazer’s service records, which often contain the VIN, helping to ensure you’re matching the vehicle to its historical maintenance documents.
Don’t have your Chevrolet Blazer’s VIN handy? Try our license plate lookup instead!
Sample VIN Decode Report for a Chevrolet Blazer
| Vehicle Spec | Value |
|---|---|
| Adaptive Cruise Control (ACC) | Optional |
| Adaptive Driving Beam (ADB) | Optional |
| Anti-lock Braking System (ABS) | Standard |
| Auto-Reverse System for Windows and Sunroofs | Standard |
| Automatic Crash Notification (ACN) / Advanced Automatic Crash Notification (AACN) | Standard |
| Axles | 2 |
| Backup Camera | Standard |
| Blind Spot Warning (BSW) | Standard |
| Body Class | Sport Utility Vehicle (SUV)/Multi-Purpose Vehicle (MPV) |
| Brake System Type | Hydraulic |
| Crash Imminent Braking (CIB) | Optional |
| Curtain Air Bag Locations | All Rows |
| Daytime Running Light (DRL) | Standard |
| Displacement (CC) | 2000.0 |
| Displacement (CI) | 122.04748818946 |
| Displacement (L) | 2.0 |
| Doors | 4 |
| Drive Type | AWD/All-Wheel Drive |
| Dynamic Brake Support (DBS) | Standard |
| Electronic Stability Control (ESC) | Standard |
| Engine Configuration | In-Line |
| Engine Model | LSY |
| Engine Number of Cylinders | 4 |
| Forward Collision Warning (FCW) | Optional |
| Front Air Bag Locations | 1st Row (Driver and Passenger) |
| Fuel Type - Primary | Gasoline |
| Gross Vehicle Weight Rating From | Class 2E: 6,001 - 7,000 lb (2,722 - 3,175 kg) |
| Headlamp Light Source | LED |
| Keyless Ignition | Standard |
| Knee Air Bag Locations | 1st Row (Driver and Passenger) |
| Lane Departure Warning (LDW) | Optional |
| Lane Keeping Assistance (LKA) | Optional |
| Model | Blazer |
| Model Year | 2020 |
| Number of Seat Rows | 2 |
| Number of Seats | 5 |
| Number of Wheels | 4 |
| Other Engine Info | VVT, ALUM, VAR 3 |
| Pedestrian Automatic Emergency Braking (PAEB) | Optional |
| Plant City | Ramos Arizpe |
| Plant Company Name | |
| Plant Country | Mexico |
| Rear Cross Traffic Alert | Standard |
| Seat Belt Type | Manual |
| Semiautomatic Headlamp Beam Switching | Standard |
| Series | Premier |
| Side Air Bag Locations | 1st Row (Driver and Passenger) |
| Steering Location | Left-Hand Drive (LHD) |
| Tire Pressure Monitoring System (TPMS) Type | Direct |
| Traction Control | Standard |
| Transmission Speeds | 9 |
| Transmission Style | Automatic |
| Turbo | Yes |
| Valve Train Design | Dual Overhead Cam (DOHC) |
| Vehicle Descriptor | 3GNKBLR4*LS |
| Vehicle Type | Multipurpose Passenger Vehicle |
| Wheel Base (inches) From | 112.70 |
| Wheel Size Front (inches) | 20 |
| Wheel Size Rear (inches) | 20 |
| Sample VIN | 3GNKBLR43LS500068 |
Specs tell you what it was built with. A VIN check tells you what's happened since.
Check any Chevrolet Blazer for accident history, flood damage, salvage title, and odometer fraud.
Run a free VIN check →Frequently Asked Questions
Where is the VIN on a Chevrolet Blazer?
On most Chevrolet vehicles, the VIN is located on the driver’s side dashboard, visible through the windshield from outside the car. It’s also on a sticker inside the driver’s side door jamb, and on your insurance card, title, and registration documents.
How do I check a Chevrolet Blazer's history for free?
Enter the Chevrolet Blazer’s 17-digit VIN into Bumper’s free VIN check at bumper.com. The free check shows factory specs and open NHTSA recalls. For the full history including accident records, title brands, theft status, and ownership history, run a full Bumper report.
What do Chevrolet Blazer VIN numbers start with?
Chevrolet Blazer VIN's start with 1GN, 3GN, 1G8, and 1GC for vehicles manufactured by General Motors LLC in United States. The first three characters of any VIN identify the manufacturer. The full WMI table on this page lists all known codes for the Chevrolet Blazer.
Decode a Chevrolet VIN
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