Equipment unit · VIN-decoded · NHTSA vPIC

2016 Peterbilt 579

1NPBL79X2GD371231 · Truck · INCOMPLETE VEHICLE
Carriers run under2
23 mo
Inspections6
all-time
OOS inspections2
of 6
First seenJun 21, 2024
CA
Last seenMay 27, 2026
CA
Inspected under 2 different carriers in 23 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
1NPBL79X2GD371231
Make
Peterbilt
Model
579
Model year
2016
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 23, 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
2 · valid

Deterministic · position 9; calculated value 2.

Model year candidates
1986 or 2016

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

North American serial sequence
371231

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
2016

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 21, 2024 – May 27, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 27, 2026CAIII · Driver-only8OOSJOE AND JON HILDEBRAND BROTHERS INC 209008491530Y1/CA
Sep 11, 2024CAI · Full0TORO PETROLEUM CORP 92288491530Y1/CA
Sep 10, 2024CAI · Full2TORO PETROLEUM CORP 92288491530Y1/CA
Jul 19, 2024CAI · Full0TORO PETROLEUM CORP 92288491530Y1/CA
Jul 19, 2024CAI · Full6OOSTORO PETROLEUM CORP 92288491530Y1/CA
Jun 21, 2024CAV · Vehicle-only2TORO PETROLEUM CORP 92288491530Y1/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
JOE AND JON HILDEBRAND BROTHERS INC2090084May 27, 2026May 27, 20261CA
TORO PETROLEUM CORP922884Jun 21, 2024Sep 11, 20245CA
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.
91530Y1CAJOE AND JON HILDEBRAND BROTHERS INCMay 27, 2026May 27, 20261
91530Y1CATORO PETROLEUM CORPJun 21, 2024Sep 11, 20245
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 23, 2026