Equipment unit · VIN-decoded · NHTSA vPIC

2019 Peterbilt 579

1NPBL79X6KD626049 · Truck · INCOMPLETE VEHICLE
Carriers run under2
12 mo
Inspections4
all-time
OOS inspections0
of 4
First seenJun 16, 2023
CA
Last seenJun 20, 2024
CA
Inspected under 2 different carriers in 12 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
1NPBL79X6KD626049
Make
Peterbilt
Model
579
Model year
2019
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 7, 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
1NP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
BL79X

Deterministic · VIN positions 4–8.

Check digit
6 · valid

Deterministic · position 9; calculated value 6.

Model year candidates
1989 or 2019

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

North American serial sequence
626049

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 · 125 decoded VINs at 100.0% prefix purity.

Model
579

Prefix basis · 125 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
2019

Observed directly for this VIN via NHTSA vPIC.

Observed make
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
579

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
INCOMPLETE VEHICLE

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 · Jun 16, 2023 – Jun 20, 2024

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 20, 2024CAII · Walk-around14AM EXPRESS INC 3838569XP46363/CA
Mar 22, 2024CAI · Full5WILLIAMS TANK LINES LLC 229047XP46363/CA
Nov 4, 2023CAI · Full2WILLIAMS TANK LINES LLC 229047XP46363/CA
Jun 16, 2023CAI · Full2WILLIAMS TANK LINES LLC 229047XP46363/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
4AM EXPRESS INC3838569Jun 20, 2024Jun 20, 20241CA
WILLIAMS TANK LINES LLC229047Jun 16, 2023Mar 22, 20243CA
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.
XP46363CA4AM EXPRESS INCJun 20, 2024Jun 20, 20241
XP46363CAWILLIAMS TANK LINES LLCJun 16, 2023Mar 22, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 7, 2026