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2018 GMC Heavy Conventional 92.5 IN. BBC Heavy Conventional Steel specifications
Build 1GTH6CEN-J · 5.8L 6cyl · Four-wheel drive · Truck-Tractor
Explore the specifications recorded for VIN pattern 1GTH6CEN-J. Start here to understand this version, then check the full VIN for an individual car.
NHTSA vPIC decode · Pattern-level specifications
- Decoded Sep 15, 2026
- 573 known VINs
- 18 listings reported active
- Engine
- 5.8L 6cyl In-Line
- Drive
- Four-wheel drive
- Body
- Truck-Tractor
- Weight class
- Class 6
- Median asking price
- $22,160
The essentials, explained
Engine, transmission & body specifications
As filed by GMC 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
- 5.8 L
- Cylinders
- 6
- Configuration
- In-Line
- Engine model
- GBD1-T
- Engine manufacturer
- Isuzu
- Fuel type
- Diesel
Drivetrain
- Drive type
- Four-wheel drive
- Brake system
- Air
Body & chassis
- Body class
- Truck-Tractor
- NHTSA body type
- TRUCK
- Cab type
- MDHD: Conventional
- Series
- 6000 Medium Duty
- Manufacturer
- GENERAL MOTORS LLC
Weight rating
- GVWR class
- Class 6
- GVWR
- 19,501–26,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
The market for this VIN pattern
What are sellers asking?
Asking prices from dealer listings associated with this VIN pattern in the United States. Mileage, condition, options and location can change the value of an individual vehicle.
$22,160 median asking price · 16 listings · as of Sep 27, 2026
Too few listings to publish a price range — with 16 cars on the market, the cheapest and the dearest are single cars, not a spread. The median above is what they ask in the middle.
Put the model year in context
Compare asking prices by model year
Explore 4 model years with VIN prefix 1GTH6CEN. 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
Highlighted: 2018, 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 1GTH6CEN and position 10 reads J. 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 | 1GT | GENERAL MOTORS LLC · World manufacturer identifier |
| 4–8 | H6CEN | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | J | Model year — 2018 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
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.
Explore actual vehicles
573 known VINs for this pattern
Every VIN we have decoded to 1GTH6CEN-J is associated with this pattern in our records. Shared specifications do not mean shared history, condition or installed options.
- 573 Known VINs
- 18 Listings reported active
- 16 Priced listings
- $22,160 Median asking
Vehicles of this build
A fixed sample of 1 known vehicles associated with this pattern — each with its own history page. The sample refreshes quarterly, not nightly, so it stays put between visits.
Browse all 16 VIN record groups
- Group 0 27 VINs
- Group 1 31 VINs
- Group 2 35 VINs
- Group 3 38 VINs
- Group 4 41 VINs
- Group 5 41 VINs
- Group 6 31 VINs
- Group 7 39 VINs
- Group 8 43 VINs
- Group 9 38 VINs
- Group A 39 VINs
- Group B 36 VINs
- Group C 37 VINs
- Group D 33 VINs
- Group E 37 VINs
- Group F 27 VINs
Groups use a stable internal sorting key. Their labels are not VIN characters, locations or model variants.
Neighboring configurations
Other factory configurations of the Heavy Conventional, 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.
- 2012 116 IN. BBC Heavy Conventional Aluminum 5.7L 8-cyl 48 known VINs
- 2012 116 IN. BBC Heavy Conventional Aluminum 8.2L 8-cyl 37 known VINs
- 2013 116 IN. BBC Heavy Conventional Aluminum 5.7L 8-cyl 43 known VINs
- 2013 116 IN. BBC Heavy Conventional Aluminum 6L 8-cyl · RWD 41 known VINs
- 2015 92.5 IN. BBC Heavy Conventional Steel 5.7L 8-cyl · 4WD 27 known VINs
Keep going
Useful answers, without the guesswork
2018 GMC Heavy Conventional: specification questions
What engine code is recorded for 1GTH6CEN-J?
The recorded engine model is GBD1-T. 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.
Prices are asking prices from 16 live dealer listings decoded to this build , last updated September 27, 2026 . They are what sellers ask, not what buyers paid.
Vehicle counts come from the 573 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 15, 2026.