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Specs
GMC
Heavy Conventional
2018
THE SPECS GUIDE
2018 GMC
Heavy Conventional
Find your trim. See what changes.
Compare recorded engines, drivetrains and specifications, then open the VIN pattern that matches your car.
IN THIS GUIDE
1
trim group on this page
VIN patterns on this page
2
VINs in our model-year data
2,778
A VIN pattern is a decoded record, not a unique factory configuration. Several patterns can describe the same trim.
Have a specific car in mind?
Use its full VIN to look up the vehicle and check the recorded specifications.
SIDE BY SIDE
Compare the details
Choose up to three VIN patterns. Each column describes one recorded pattern.
Vehicle 1
92.5 IN. BBC Heavy Conventional Steel · 4WD · 5.8L 6cyl · 1GTH6CEN-J
92.5 IN. BBC Heavy Conventional Steel · 5.7L 8cyl · 1GTH5CEA-J
Vehicle 2
92.5 IN. BBC Heavy Conventional Steel · 4WD · 5.8L 6cyl · 1GTH6CEN-J
92.5 IN. BBC Heavy Conventional Steel · 5.7L 8cyl · 1GTH5CEA-J
Vehicle 3
No third vehicle
92.5 IN. BBC Heavy Conventional Steel · 4WD · 5.8L 6cyl · 1GTH6CEN-J
92.5 IN. BBC Heavy Conventional Steel · 5.7L 8cyl · 1GTH5CEA-J
Swipe the table sideways to compare vehicles. Specification names stay visible.
Specification
92.5 IN. BBC Heavy Conventional Steel · 4WD
1GTH6CEN-J
92.5 IN. BBC Heavy Conventional Steel
1GTH5CEA-J
Engine
5.8L 6-cyl
5.7L 8-cyl
Drivetrain
Four-wheel drive
Not recorded
Fuel
Diesel
Gasoline
Body
Truck-Tractor
Truck-Tractor
Median asking price
$19,159
Not recorded
Price observations
27
Not recorded
Price sample updated
Oct 11, 2026
Not recorded
Missing data does not mean a feature is absent. Prices are advertised asking prices for each pattern’s own sample, not completed sale prices or a trim-wide average.
EXPLORE THE LINEUP
Find your Heavy Conventional
Grouped by recorded trim, with engine and drive variants underneath. Open a variant to see every source pattern.
92.5 IN. BBC Heavy Conventional Steel
2018 Heavy Conventional
92.5 IN. BBC Heavy Conventional Steel
2 VIN patterns
5.7L 8-cyl · Gasoline · 4X2
1 pattern · View specs
Truck-Tractor
No qualifying asking-price sample for this pattern.
5.8L 6-cyl · Diesel · Four-wheel drive
1 pattern · View specs
Truck-Tractor
$19,159
median asking price
27 price observations · Updated Oct 11, 2026
Source: manufacturer specifications decoded through NHTSA vPIC, alongside VIN and listing records in our dataset. Trim groups are for browsing; shared labels do not establish identical equipment. Confirm options on the specific vehicle.
THE MARKET VIEW
What are 2018 Heavy Conventionals listed for?
Explore model-year asking prices and available market history.
Explore prices →
BEFORE YOU CHOOSE
Go beyond the spec sheet
Equipment, fuel economy and safety results can vary with the vehicle’s engine, drivetrain and options.
Safety & recalls
Check the tested body style and drivetrain before comparing crash ratings.
Check NHTSA ratings →
Check recalls by VIN →
Fuel economy
Match the engine and drivetrain to an EPA entry. A model-year fuel estimate may describe a different variant from yours.
Find the matching EPA vehicle →
Prices across model years
Compare current asking-price samples. Differences between model years are not a forecast of how one car will depreciate.
Heavy Conventional prices by age →
Asking-price history →