THE SPECS GUIDE

2018 GMC Sierra

Find your trim. See what changes.

Compare recorded engines, drivetrains and specifications, then open the VIN pattern that matches your car.

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Use its full VIN to look up the vehicle and check the recorded specifications.

Find a matching pattern on this page, or continue to vehicle lookup.

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Choose up to three VIN patterns. Each column describes one recorded pattern.

Swipe the table sideways to compare vehicles. Specification names stay visible.

Specification Denali · 4WD 1GT12UEY-J SLT · 4WD 1GT12TEY-J Fleet/Base · 4WD 1GTV2LEC-J
Engine 6.6L 8-cyl 6.6L 8-cyl 5.3L 8-cyl
Drivetrain Four-wheel drive Four-wheel drive Four-wheel drive
Fuel Diesel Diesel Gasoline
Body Pickup Pickup Pickup
Doors 4-door 4-door 4-door
Median asking price $42,997 $39,080 $20,000
Price observations 226 116 90
Price sample updated Oct 11, 2026 Oct 11, 2026 Oct 11, 2026

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 Sierra

Grouped by recorded trim, with engine and drive variants underneath. Open a variant to see every source pattern.

2018 Sierra

Denali

7 VIN patterns
5.3L 8-cyl · Gasoline · 4x2 1 pattern · View specs
3GTP1PEC-J → 710 VINs in our data

Pickup

$27,326 median asking price

31 price observations · Updated Oct 11, 2026

5.3L 8-cyl · Gasoline · Four-wheel drive 1 pattern · View specs
3GT72PEC-J → 1 VINs in our data

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

6.2L 8-cyl · Gasoline · 4x2 1 pattern · View specs
3GTP1PEJ-J → 268 VINs in our data

Pickup

$28,387 median asking price

6 price observations · Updated Oct 11, 2026

6.6L 8-cyl · Diesel · Four-wheel drive 2 patterns · View specs
1GT42YEY-J → 3,286 VINs in our data

Pickup

$43,445 median asking price

105 price observations · Updated Oct 11, 2026

1GT12UEY-J → 7,283 VINs in our data

Pickup

$42,997 median asking price

226 price observations · Updated Oct 11, 2026

6L 8-cyl · Gasoline · 4x2 1 pattern · View specs
1GT11UEG-J → 5 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

6L 8-cyl · Gasoline · Four-wheel drive 1 pattern · View specs
1GT42YEG-J → 27 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

2018 Sierra

Fleet/Base

18 VIN patterns
4.3L 6-cyl · Gasoline · 4x2 1 pattern · View specs
1GTR1LEH-J → 433 VINs in our data

Pickup

$16,595 median asking price

14 price observations · Updated Oct 11, 2026

5.3L 8-cyl · Gasoline · Four-wheel drive 2 patterns · View specs
3GTU2LEC-J → 248 VINs in our data

Pickup

$20,749 median asking price

14 price observations · Updated Oct 11, 2026

1GTV2LEC-J → 3,011 VINs in our data

Pickup

$20,000 median asking price

90 price observations · Updated Oct 11, 2026

6.6L 8-cyl · Diesel · 4x2 3 patterns · View specs
1GT01REY-J → 3 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GD31VCY-J → 12 VINs in our data

Incomplete - Chassis CAB (Single CAB)

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GD41VCY-J → 16 VINs in our data

Incomplete - Chassis CAB (Double CAB)

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

6.6L 8-cyl · Diesel · Four-wheel drive 5 patterns · View specs
1GT32VCY-J → 19 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GT12VEY-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GD32VCY-J → 96 VINs in our data

Incomplete - Chassis CAB (Single CAB)

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GT42VCY-J → 201 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

1GT02REY-J → 6 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

6L 8-cyl · Gasoline · 4x2 2 patterns · View specs
1GT31VCG-J → 14 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GT01REG-J → 63 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

6L 8-cyl · Gasoline · Four-wheel drive 5 patterns · View specs
1GD12REG-J → 21 VINs in our data

Incomplete

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GD32VCG-J → 25 VINs in our data

Incomplete - Chassis CAB (Single CAB)

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GT42VEG-J → 5 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GT52VCG-J → 12 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GT32VCG-J → 9 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

2018 Sierra

SLE

16 VIN patterns
4.3L 6-cyl · Gasoline · 4x2 1 pattern · View specs
1GTR1MEH-J → 51 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

5.3L 8-cyl · Gasoline · 4x2 1 pattern · View specs
1GTV1MEC-J → 6 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

6.6L 8-cyl · Diesel · 4x2 1 pattern · View specs
1GD31WCY-J → 1 VINs in our data

Incomplete - Chassis CAB (Single CAB)

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

6.6L 8-cyl · Diesel · Four-wheel drive 6 patterns · View specs
1GT12SEY-J → 459 VINs in our data

Pickup

$33,990 median asking price

9 price observations · Updated Oct 11, 2026

1GD32WEY-J → 2 VINs in our data

Incomplete - Chassis CAB (Single CAB)

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GT02SEY-J → 15 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GT42WCY-J → 146 VINs in our data

Pickup

$37,959 median asking price

14 price observations · Updated Oct 11, 2026

1GT42WEY-J → 14 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GD32WCY-J → 6 VINs in our data

Incomplete - Chassis CAB (Single CAB)

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

6L 8-cyl · Gasoline · 4x2 1 pattern · View specs
1GD31WCG-J → 2 VINs in our data

Incomplete - Chassis CAB (Single CAB)

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

6L 8-cyl · Gasoline · Four-wheel drive 6 patterns · View specs
1GT22WEG-J → 4 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GT12WEG-J → 8 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GT42WEG-J → 2 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GD32WCG-J → 2 VINs in our data

Incomplete - Chassis CAB (Single CAB)

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GD22SEG-J → 2 VINs in our data

Incomplete

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GT52WCG-J → 4 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

2018 Sierra

SLT

7 VIN patterns
5.3L 8-cyl · Gasoline · Four-wheel drive 2 patterns · View specs
3GTU2NER-J → 1,327 VINs in our data

Pickup

$28,233 median asking price

88 price observations · Updated Oct 11, 2026

3GT42NEC-J → 2 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

6.2L 8-cyl · Gasoline · 4x2 1 pattern · View specs
3GTP1NEJ-J → 85 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

6.2L 8-cyl · Gasoline · Four-wheel drive 1 pattern · View specs
1GTV2NEJ-J → 220 VINs in our data

Pickup

$24,995 median asking price

17 price observations · Updated Oct 11, 2026

6.6L 8-cyl · Diesel · 4x2 1 pattern · View specs
1GT21TEY-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

6.6L 8-cyl · Diesel · Four-wheel drive 1 pattern · View specs
1GT12TEY-J → 3,402 VINs in our data

Pickup

$39,080 median asking price

116 price observations · Updated Oct 11, 2026

6L 8-cyl · Gasoline · Four-wheel drive 1 pattern · View specs
1GT42XCG-J → 15 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

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 Sierras 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.

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 →