Equipment unit · VIN-decoded · NHTSA vPIC

2023 Peterbilt 579

1XPBD49XXPD853494 · Truck-Tractor · TRUCK
Carriers run under2
29 mo
Inspections4
all-time
OOS inspections0
of 4
First seenAug 22, 2023
AR
Last seenJan 19, 2026
CA
Inspected under 2 different carriers in 29 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
1XPBD49XXPD853494
Make
Peterbilt
Model
579
Model year
2023
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 12, 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
BD49X

Deterministic · VIN positions 4–8.

Check digit
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
1993 or 2023

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

North American serial sequence
853494

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 · 26,166 decoded VINs at 100.0% prefix purity.

Model
579

Prefix basis · 26,166 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
2023

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-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 · Aug 22, 2023 – Jan 19, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jan 19, 2026CAIII · Driver-only0D & M CARRIERS LLC 9633003HJ606/OK
Dec 1, 2025MOIII · Driver-only1D & M CARRIERS LLC 9633003HJ606/OK
Jul 30, 2025COIII · Driver-only0HEARTLAND LEASING INC 17512533HJ606/OK
Aug 22, 2023ARI · Full3D & M CARRIERS LLC 9633003HJ606/OK
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
D & M CARRIERS LLC963300Aug 22, 2023Jan 19, 20263OK
HEARTLAND LEASING INC1751253Jul 30, 2025Jul 30, 20251IA
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.
3HJ606OK1D & M CARRIERS LLCAug 22, 2023Jan 19, 20263
3HJ606OKHEARTLAND LEASING INCJul 30, 2025Jul 30, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026