Equipment unit · VIN-decoded · NHTSA vPIC

2020 Peterbilt 579

1XPBDP9X8LD675497 · Truck-Tractor · TRUCK
Carriers run under3
28 mo
Inspections8
all-time
OOS inspections0
of 8
First seenSep 19, 2023
CA
Last seenJan 29, 2026
CA
Inspected under 3 different carriers in 28 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
1XPBDP9X8LD675497
Make
Peterbilt
Model
579
Model year
2020
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
BDP9X

Deterministic · VIN positions 4–8.

Check digit
8 · valid

Deterministic · position 9; calculated value 8.

Model year candidates
1990 or 2020

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

North American serial sequence
675497

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 · 21,366 decoded VINs at 100.0% prefix purity.

Model
579

Prefix basis · 21,366 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
2020

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 · Sep 19, 2023 – Jan 29, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jan 29, 2026CAII · Walk-around0JHN LOGISTICS LLC 4404498ZP59748/CA
Oct 21, 2025CAI · Full0JHN LOGISTICS LLC 4404498ZP59748/CA
Oct 17, 2025CAII · Walk-around1JHN LOGISTICS LLC 4404498ZP59748/CA
Jun 12, 2025CAIII · Driver-only0WESTERN TRUCK PARTS & EQUIPMENT COMPANY LLC 852143NONE/CA
May 28, 2025CAII · Walk-around1HUMBOLDT PACIFIC LLC 1920722XP66220/CA
Dec 10, 2024CAI · Full0HUMBOLDT PACIFIC LLC 1920722XP66220/CA
Oct 16, 2023ORIII · Driver-only1HUMBOLDT PACIFIC LLC 1920722XP66220/CA
Sep 19, 2023CAIII · Driver-only0HUMBOLDT PACIFIC LLC 1920722XP66220/CA
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
JHN LOGISTICS LLC4404498Oct 17, 2025Jan 29, 20263CA
WESTERN TRUCK PARTS & EQUIPMENT COMPANY LLC852143Jun 12, 2025Jun 12, 20251WA
HUMBOLDT PACIFIC LLC1920722Sep 19, 2023May 28, 20254CA
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.
ZP59748CAJHN LOGISTICS LLCOct 17, 2025Jan 29, 20263
NONECAWESTERN TRUCK PARTS & EQUIPMENT COMPANY LLCJun 12, 2025Jun 12, 20251
XP66220CAHUMBOLDT PACIFIC LLCSep 19, 2023May 28, 20254
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026