Equipment unit · VIN-decoded · NHTSA vPIC

1999 Kenworth T600

1XKAD69X9XR828439 · Truck-Tractor · TRUCK
Carriers run under2
37 mo
Inspections6
all-time
OOS inspections0
of 6
First seenJun 20, 2023
TX
Last seenJul 30, 2026
TX
Inspected under 2 different carriers in 37 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
1XKAD69X9XR828439
Make
Kenworth
Model
T600
Model year
1999
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 28, 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
AD69X

Deterministic · VIN positions 4–8.

Check digit
9 · valid

Deterministic · position 9; calculated value 9.

Model year candidates
1999 or 2029

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

North American serial sequence
828439

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
1999

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 · Jun 20, 2023 – Jul 30, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 30, 2026TXII · Walk-around0SERRANO TRUCKING LLC 19678051N51023/TX
Jul 3, 2025TXII · Walk-around2SERRANO TRUCKING LLC 19678051N51023/TX
Dec 19, 2024TXII · Walk-around1SERRANO TRUCKING LLC 19678051N51023/TX
Aug 17, 2023TXII · Walk-around3STATEWIDE MATERIALS TRANSPORT LEASING LTD 19361571M68480/TX
Jun 21, 2023TXII · Walk-around2STATEWIDE MATERIALS TRANSPORT LEASING LTD 19361571M68480/TX
Jun 20, 2023TXII · Walk-around4STATEWIDE MATERIALS TRANSPORT LEASING LTD 19361571M68480/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SERRANO TRUCKING LLC1967805Dec 19, 2024Jul 30, 20263TX
STATEWIDE MATERIALS TRANSPORT LEASING LTD1936157Jun 20, 2023Aug 17, 20233TX
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.
1N51023TX1SERRANO TRUCKING LLCDec 19, 2024Jul 30, 20263
1M68480TXSTATEWIDE MATERIALS TRANSPORT LEASING LTDJun 20, 2023Aug 17, 20233
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 28, 2026