Equipment unit · VIN-decoded · NHTSA vPIC

2003 Peterbilt 379

1XP5DB9X93D591057 · Truck-Tractor · TRUCK
Carriers run under1
36 mo
Inspections7
all-time
OOS inspections0
of 7
First seenJul 19, 2023
TX
Last seenJul 2, 2026
NM
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XP5DB9X93D591057
Make
Peterbilt
Model
379
Model year
2003
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 24, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
1XP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
5DB9X

Deterministic · VIN positions 4–8.

Check digit
9 · valid

Deterministic · position 9; calculated value 9.

Model year candidates
2003 or 2033

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
591057

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Make
PETERBILT

Prefix basis · 13,463 decoded VINs at 100.0% prefix purity.

Model
379

Prefix basis · 13,463 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2003

Observed directly for this VIN via NHTSA vPIC.

Observed make
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
379

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

Observed directly for this VIN via NHTSA vPIC.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jul 19, 2023 – Jul 2, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 2, 2026NMIII · Driver-only1EXTREME ALFALFA INC 1226516IRM5826/NM
Jun 18, 2025NMII · Walk-around0EXTREME ALFALFA INC 1226516IRM5826/NM
Dec 15, 2024COII · Walk-around3EXTREME ALFALFA INC 1226516IRM5826/NM
Apr 15, 2024COIII · Driver-only2EXTREME ALFALFA INC 1226516IRM5826/NM
Jan 17, 2024COIII · Driver-only0EXTREME ALFALFA INC 1226516IRM5826/NM
Sep 7, 2023NMIII · Driver-only0EXTREME ALFALFA INC 1226516IRM5826/NM
Jul 19, 2023TXII · Walk-around1EXTREME ALFALFA INC 1226516IRG5713/NM
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
EXTREME ALFALFA INC1226516Jul 19, 2023Jul 2, 20267NM
Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.
04

Plate & unit-number history

The same truck under different plate registrations across carriers

PlateState / prov.Unit no.CarrierDate rangeInsp.
IRM5826NM1EXTREME ALFALFA INCSep 7, 2023Jul 2, 20266
IRG5713NMEXTREME ALFALFA INCJul 19, 2023Jul 19, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 24, 2026