Equipment unit · VIN-decoded · NHTSA vPIC

2003 Peterbilt 379

1XP5DB9X73D594247 · Truck-Tractor · TRUCK
Carriers run under3
30 mo
Inspections7
all-time
OOS inspections1
of 7
First seenOct 10, 2023
IA
Last seenApr 17, 2026
OK
Inspected under 3 different carriers in 30 months
A unit that bounces between many operators can indicate slip-seating, heavy sub-haul, or double-brokering. Review the carrier timeline below for load integrity — context for human judgment, not a verdict.
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XP5DB9X73D594247
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 21, 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
7 · valid

Deterministic · position 9; calculated value 7.

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
594247

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 · Oct 10, 2023 – Apr 17, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 17, 2026OKII · Walk-around10OOSM RAMSEYER TRUCKING LLC 24709903NE681/OK
Feb 20, 2026OKIII · Driver-only1M RAMSEYER TRUCKING LLC 24709903NE681/OK
Dec 19, 2025OKIII · Driver-only0M RAMSEYER TRUCKING LLC 24709903NE681/OK
May 29, 2025KSII · Walk-around1SIERRA TRANSPORTATION LLC 21968063KC986/OK
Mar 10, 2025LAIII · Driver-only0SIERRA TRANSPORTATION LLC 21968063KC986/OK
Feb 23, 2024OKII · Walk-around2SIERRA TRANSPORTATION LLC 21968063KC986/OK
Oct 10, 2023IAII · Walk-around2COPUS TRUCKING LLC 36749483GQ804/OK
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
M RAMSEYER TRUCKING LLC2470990Dec 19, 2025Apr 17, 20263OK
SIERRA TRANSPORTATION LLC2196806Feb 23, 2024May 29, 20253OK
COPUS TRUCKING LLC3674948Oct 10, 2023Oct 10, 20231OK
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.
3NE681OKM RAMSEYER TRUCKING LLCDec 19, 2025Apr 17, 20263
3KC986OKSIERRA TRANSPORTATION LLCFeb 23, 2024May 29, 20253
3GQ804OKCOPUS TRUCKING LLCOct 10, 2023Oct 10, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026