Equipment unit · VIN-decoded · NHTSA vPIC

2017 Peterbilt 579

1XPBD49XXHD431548 · Truck-Tractor · TRUCK
Carriers run under2
33 mo
Inspections8
all-time
OOS inspections0
of 8
First seenDec 26, 2023
WA
Last seenSep 29, 2026
WA
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
1XPBD49XXHD431548
Make
Peterbilt
Model
579
Model year
2017
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 25, 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
1987 or 2017

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

North American serial sequence
431548

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.

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 · Dec 26, 2023 – Sep 29, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Sep 29, 2026WAIII · Driver-only0—PILLARS-STRYDER TRANSPORT LTD 248456994783P/BC
Sep 7, 2026WAIII · Driver-only0—PILLARS-STRYDER TRANSPORT LTD 248456994783P/BC
May 14, 2026WAI · Full1—PILLARS-STRYDER TRANSPORT LTD 248456994783P/BC
Mar 17, 2026WAII · Walk-around1—PILLARS-STRYDER TRANSPORT LTD 248456994783P/BC
Dec 23, 2025WAII · Walk-around1—PILLARS-STRYDER TRANSPORT LTD 248456994783P/BC
Dec 5, 2024WAIII · Driver-only0—STRYDER MOTORFREIGHT CANADA LTD 90162164251P/BC
Jan 12, 2024WAIII · Driver-only0—STRYDER MOTORFREIGHT CANADA LTD 90162164251P/BC
Dec 26, 2023WAIII · Driver-only0—STRYDER MOTORFREIGHT CANADA LTD 90162164251P/BC
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
PILLARS-STRYDER TRANSPORT LTD2484569Dec 23, 2025Sep 29, 20265BC
STRYDER MOTORFREIGHT CANADA LTD901621Dec 26, 2023Dec 5, 20243BC
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.
94783PBC1PILLARS-STRYDER TRANSPORT LTDDec 23, 2025 → Sep 29, 20265
64251PBC—STRYDER MOTORFREIGHT CANADA LTDDec 26, 2023 → Dec 5, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 25, 2026