Equipment unit · VIN-decoded · NHTSA vPIC

2004 Peterbilt 379

1XP5D49X04D826703 · Truck-Tractor · TRUCK
Carriers run under3
23 mo
Inspections4
all-time
OOS inspections0
of 4
First seenOct 19, 2023
KY
Last seenSep 24, 2025
MD
Inspected under 3 different carriers in 23 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
1XP5D49X04D826703
Make
Peterbilt
Model
379
Model year
2004
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 11, 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
5D49X

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
2004 or 2034

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

North American serial sequence
826703

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 · 880 decoded VINs at 100.0% prefix purity.

Model
379

Prefix basis · 880 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
2004

Observed directly for this VIN via NHTSA vPIC.

Observed make
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
379

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 · Oct 19, 2023 – Sep 24, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Sep 24, 2025MDII · Walk-around2CONESTOGA TRANSPORT LLC 1407770ACX048/KS
Feb 4, 2025KSII · Walk-around2FRONTIER TRANSPORTATION LLC 41997783KM527/OK
Jul 16, 2024KSII · Walk-around1FRONTIER TRANSPORTATION LLC 41997783KM527/OK
Oct 19, 2023KYI · Full4AHT TRANSPORT LLC 3087387235259/KS
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
CONESTOGA TRANSPORT LLC1407770Sep 24, 2025Sep 24, 20251KS
FRONTIER TRANSPORTATION LLC4199778Jul 16, 2024Feb 4, 20252OK
AHT TRANSPORT LLC3087387Oct 19, 2023Oct 19, 20231KS
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.
ACX048KSCONESTOGA TRANSPORT LLCSep 24, 2025Sep 24, 20251
3KM527OKFRONTIER TRANSPORTATION LLCJul 16, 2024Feb 4, 20252
235259KSAHT TRANSPORT LLCOct 19, 2023Oct 19, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 11, 2026