Factory build sheet
2003 GMC Sierra C1500
Build 1GTEC19X-3 · 4.3L 6cyl · Pickup
VIN positions 1 through 8 read 1GTEC19X and position 10 reads 3. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Sierra whose VIN starts 1GTEC19X and carries 3 in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 46 of them.
- Decoded Jul 7, 2026
- 46 known VINs
Factory specification
As filed by GMC with NHTSA for this build. Fields the filing does not record are left out entirely — a missing row means no recorded value, not a missing feature.
Engine
- Displacement
- 4.3 L
- Cylinders
- 6
- Configuration
- V-Shaped
- Engine model
- LU3 90 Degrees
- Engine manufacturer
- WRN
- Fuel type
- Gasoline
Drivetrain
- Drive type
- 4x2
Body & chassis
- Body class
- Pickup
- NHTSA body type
- TRUCK
- Cab type
- Extra/Super/Quad/Double/King/Extended
- Series
- 1500 (1/2 Ton)
- 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.
The same build, other model years
GMC used the VIN pattern 1GTEC19X for 5 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
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.
| Positions | Characters | What they encode |
|---|---|---|
| 1–3 | 1GT | GENERAL MOTORS LLC · World manufacturer identifier |
| 4–8 | EC19X | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | 3 | Model year — 2003 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
46 vehicles carry this build
Every VIN we have decoded to 1GTEC19X-3 shares the specification above.
- 46 Known VINs
- 1GTEC19X 63Z360585
- 1GTEC19X 73Z333668
- 1GTEC19X 33Z360950
- 1GTEC19X 73Z175171
- 1GTEC19X 13Z335013
- 1GTEC19X 43Z173135
- 1GTEC19X 23Z262816
- 1GTEC19X 23Z209193
- 1GTEC19X 83Z173400
- 1GTEC19X 33Z336843
- 1GTEC19X 13Z307969
- 1GTEC19X 63Z172570
- 1GTEC19X 93Z287440
- 1GTEC19X 73Z181553
- 1GTEC19X 73Z346632
- 1GTEC19X 63Z322886
- 1GTEC19X 23Z281639
- 1GTEC19X 53Z357984
- 1GTEC19X 13Z181614
- 1GTEC19X 13Z284936
- 1GTEC19X 13Z171021
- 1GTEC19X 83Z157536
- 1GTEC19X X3Z294090
- 1GTEC19X 33Z296506
- 1GTEC19X X3Z128605
- 1GTEC19X 23Z222140
- 1GTEC19X 33Z213754
- 1GTEC19X 13Z331687
- 1GTEC19X 83Z357168
- 1GTEC19X 73Z329975
- 1GTEC19X X3Z331249
- 1GTEC19X 03Z302486
- 1GTEC19X 13Z159287
- 1GTEC19X X3Z135182
- 1GTEC19X 03Z319840
- 1GTEC19X 63Z278954
- 1GTEC19X 23Z131109
- 1GTEC19X 23Z304045
- 1GTEC19X 03Z132663
- 1GTEC19X 63Z358738
- 1GTEC19X 73Z146222
- 1GTEC19X 93Z144939
- 1GTEC19X 63Z316621
- 1GTEC19X X3Z119886
- 1GTEC19X 63Z266836
- 1GTEC19X X3Z176380
Neighboring configurations
Other factory configurations of the Sierra, each with its own build sheet. The set is fixed by the VIN patterns themselves, so it does not shuffle as prices or inventory move.
Keep going
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 46 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.