Equipment unit · VIN-decoded · NHTSA vPIC

2003 Kenworth T600

1XKADB9X23J393992 · Truck-Tractor · TRUCK
Carriers run under3
25 mo
Inspections6
all-time
OOS inspections1
of 6
First seenAug 28, 2023
TX
Last seenSep 10, 2025
TX
Inspected under 3 different carriers in 25 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
1XKADB9X23J393992
Make
Kenworth
Model
T600
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
Jun 24, 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
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
ADB9X

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
393992

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.

Not established

No supported platform claim is established for this prefix

The resolver answered successfully but returned no row above the evidence floor. This does not mean the vehicle has no platform or that no data exists; it means this store cannot make the claim.

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
2003

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T600

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

  • platform make
  • platform model
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Aug 28, 2023 – Sep 10, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Sep 10, 2025TXII · Walk-around1RICKMAN TRANSPORT INC 2536020R764324/TX
Dec 10, 2024NMII · Walk-around1RICKMAN TRANSPORT INC 2536020R764324/TX
Oct 9, 2024TXII · Walk-around0SISU ENERGY LLC 33282581N04220/TX
Sep 26, 2024TXII · Walk-around5OOSSISU ENERGY LLC 33282581N04220/TX
Aug 23, 2024TXII · Walk-around1R L WALKER TRANSPORT INC 5740821N04220/TX
Aug 28, 2023TXII · Walk-around0SISU ENERGY LLC 3328258R527760/TX
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
RICKMAN TRANSPORT INC2536020Dec 10, 2024Sep 10, 20252TX
SISU ENERGY LLC3328258Aug 28, 2023Oct 9, 20243TX
R L WALKER TRANSPORT INC574082Aug 23, 2024Aug 23, 20241TX
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.
R764324TXRICKMAN TRANSPORT INCDec 10, 2024Sep 10, 20252
1N04220TXSISU ENERGY LLCSep 26, 2024Oct 9, 20242
1N04220TXR L WALKER TRANSPORT INCAug 23, 2024Aug 23, 20241
R527760TXSISU ENERGY LLCAug 28, 2023Aug 28, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 24, 2026