Factory build sheet
2001 GMC Sierra
Build 1GTHC23G-1 · 8.1L 8cyl · Pickup
VIN positions 1 through 8 read 1GTHC23G and position 10 reads 1. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Sierra whose VIN starts 1GTHC23G and carries 1 in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 26 of them.
- Decoded Jul 7, 2026
- 26 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
- 8.1 L
- Cylinders
- 8
- Configuration
- V-Shaped
- Engine model
- L18
- Engine manufacturer
- WRN
- Fuel type
- Gasoline
Drivetrain
- Drive type
- 4x2
- Brake system
- Hydraulic
Body & chassis
- Body class
- Pickup
- NHTSA body type
- TRUCK
- Doors
- 4
- Cab type
- Crew/Super Crew/Crew Max
- Series
- 2500 (3/4 Ton)
- Manufacturer
- GENERAL MOTORS LLC
Weight rating
- GVWR class
- Class 2H
- GVWR
- 9,001–10,000 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 1GTHC23G for 2 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
-
2001 You are here code 1
- 2002 8.1L 8cyl Pickup · 44 vehicles code 2
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 | HC23G | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | 1 | Model year — 2001 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
NHTSA safety ratings
Crash-test results are published per model year and body style, so they cover the 2001 GMC Sierra as a whole rather than this build alone.
Rollover
★★★ ★★ 3 / 5
14 recall campaigns are recorded for the 2001 Sierra. Recalls are issued per VIN range — check the VIN of the car you are looking at, not the model.
26 vehicles carry this build
Every VIN we have decoded to 1GTHC23G-1 shares the specification above.
- 26 Known VINs
- 1GTHC23G 11F115929
- 1GTHC23G 21F166100
- 1GTHC23G 11F197824
- 1GTHC23G 11F123450
- 1GTHC23G 11F185141
- 1GTHC23G 21F169076
- 1GTHC23G 41F144471
- 1GTHC23G 61F149218
- 1GTHC23G 71F146683
- 1GTHC23G 31F148849
- 1GTHC23G X1F130820
- 1GTHC23G 21F168428
- 1GTHC23G 71F145095
- 1GTHC23G X1F144071
- 1GTHC23G 11F145013
- 1GTHC23G 01F145696
- 1GTHC23G 71F130306
- 1GTHC23G 41F145264
- 1GTHC23G 31F146549
- 1GTHC23G 41F173825
- 1GTHC23G 01F177421
- 1GTHC23G 51F197888
- 1GTHC23G 31F122316
- 1GTHC23G 81F178459
- 1GTHC23G 31F123255
- 1GTHC23G 01F148002
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 26 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.