Equipment unit · VIN-decoded · NHTSA vPIC

2019 Peterbilt 579

1XPBD49X4KD630103 · Truck-Tractor · TRUCK
Carriers run under2
33 mo
Inspections8
all-time
OOS inspections1
of 8
First seenAug 8, 2023
WA
Last seenMay 17, 2026
TX
Inspected under 2 different carriers in 33 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
1XPBD49X4KD630103
Make
Peterbilt
Model
579
Model year
2019
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
BD49X

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

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
630103

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
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-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 8, 2023 – May 17, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 17, 2026TXII · Walk-around9TURBO FLEET XPRESS INC 3284252R833364/TX
Feb 6, 2026LAIII · Driver-only3OOSTURBO FLEET XPRESS INC 3284252R693094/TX
Jun 14, 2025USI · Full3SDL CARRIERS INC 3019765R693094/TX
Mar 28, 2025TXII · Walk-around2SDL CARRIERS INC 3019765R693094/TX
Apr 24, 2024ALII · Walk-around0SDL CARRIERS INC 3019765R693094/TX
Feb 23, 2024NMI · Full0SDL CARRIERS INC 3019765R693094/TX
Sep 20, 2023USII · Walk-around2SDL CARRIERS INC 3019765R693094/TX
Aug 8, 2023WAIII · Driver-only2SDL CARRIERS INC 3019765R632680/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
TURBO FLEET XPRESS INC3284252Feb 6, 2026May 17, 20262TX
SDL CARRIERS INC3019765Aug 8, 2023Jun 14, 20256TX
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.
R833364TXTURBO FLEET XPRESS INCMay 17, 2026May 17, 20261
R693094TXTURBO FLEET XPRESS INCFeb 6, 2026Feb 6, 20261
R693094TXSDL CARRIERS INCSep 20, 2023Jun 14, 20255
R632680TXSDL CARRIERS INCAug 8, 2023Aug 8, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026