Equipment unit · VIN-decoded · NHTSA vPIC

2020 Peterbilt 579

1XPBDK9X3LD688208 · Truck-Tractor · TRUCK
Carriers run under1
16 mo
Inspections4
all-time
OOS inspections2
of 4
First seenJan 31, 2024
WI
Last seenMay 19, 2025
WI
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XPBDK9X3LD688208
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
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
BDK9X

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

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
688208

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 · 310 decoded VINs at 100.0% prefix purity.

Model
579

Prefix basis · 310 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 · Jan 31, 2024 – May 19, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
May 19, 2025WII · Full3SHEFLAND TRUCKING SERVICE INC 7446729997Z/WI
Apr 24, 2025MNIII · Driver-only1SHEFLAND TRUCKING SERVICE INC 7446729997Z/WI
Dec 23, 2024WIII · Walk-around1OOSSHEFLAND TRUCKING SERVICE INC 7446729997Z/WI
Jan 31, 2024WIII · Walk-around2OOSSHEFLAND TRUCKING SERVICE INC 744672997Z/WI
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SHEFLAND TRUCKING SERVICE INC74467Jan 31, 2024May 19, 20254WI
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.
29997ZWISHEFLAND TRUCKING SERVICE INCDec 23, 2024May 19, 20253
2997ZWISHEFLAND TRUCKING SERVICE INCJan 31, 2024Jan 31, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026