Equipment unit · VIN-decoded · NHTSA vPIC

2003 Peterbilt 379

1XP5DB9X23D810408 · Truck-Tractor · TRUCK
Carriers run under2
13 mo
Inspections3
all-time
OOS inspections1
of 3
First seenSep 10, 2025
IL
Last seenOct 5, 2026
IL
Inspected under 2 different carriers in 13 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
1XP5DB9X23D810408
Make
Peterbilt
Model
379
Model year
2003
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Sep 6, 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
5DB9X

Deterministic · VIN positions 4–8.

Check digit
2 · valid

Deterministic · position 9; calculated value 2.

Model year candidates
2003 or 2033

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

North American serial sequence
810408

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 · 13,463 decoded VINs at 100.0% prefix purity.

Model
379

Prefix basis · 13,463 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 · Sep 10, 2025 – Oct 5, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 5, 2026ILII · Walk-around5OOSHAYDAY TRUCKING LLC 433296257197Z/IL
Oct 16, 2025ILIV · Special1—DONALD E WHEATLEY 31882257197Z/IL
Sep 10, 2025ILIII · Driver-only2—DONALD E WHEATLEY 31882257197Z/IL
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HAYDAY TRUCKING LLC4332962Oct 5, 2026Oct 5, 20261IL
DONALD E WHEATLEY318822Sep 10, 2025Oct 16, 20252IL
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.
57197ZIL1HAYDAY TRUCKING LLCOct 5, 2026 → Oct 5, 20261
57197ZIL—DONALD E WHEATLEYSep 10, 2025 → Oct 16, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Sep 6, 2026