Equipment unit · VIN-decoded · NHTSA vPIC

1993 Kenworth T600

3WK4DJ9X4PF335383 · Truck-Tractor · TRUCK
Carriers run under2
38 mo
Inspections43
all-time
OOS inspections4
of 43
First seenJun 13, 2023
TX
Last seenAug 4, 2026
US
Inspected under 2 different carriers in 38 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
3WK4DJ9X4PF335383
Make
Kenworth
Model
T600
Model year
1993
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 14, 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
3WK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
4DJ9X

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1993 or 2023

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

North American serial sequence
335383

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
1993

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 13, 2023 – Aug 4, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 4, 2026USIII · Driver-only0LIDER TRACK SA DE CV 353552537AX2M/MX
Jul 30, 2026USIII · Driver-only0LIDER TRACK SA DE CV 353552537AX2M/MX
Jun 22, 2026USI · Full8OOSLIDER TRACK SA DE CV 353552537AX2M/MX
May 27, 2026NMII · Walk-around1LIDER TRACK SA DE CV 353552537AX2M/MX
May 15, 2026USI · Full0LIDER TRACK SA DE CV 353552537AX2M/MX
May 6, 2026TXIII · Driver-only0SERGIO VARELA MALDONADO 72522637AX2M/MX
Apr 23, 2026TXIII · Driver-only0SERGIO VARELA MALDONADO 72522637AX2M/MX
Apr 7, 2026TXI · Full1SERGIO VARELA MALDONADO 72522637AX2M/CI
Apr 1, 2026TXI · Full6SERGIO VARELA MALDONADO 72522637AX2M/MX
Mar 25, 2026USIII · Driver-only0SERGIO VARELA MALDONADO 72522637AX2M/MX
Mar 6, 2026TXI · Full2SERGIO VARELA MALDONADO 72522637AX2M/CI
Mar 3, 2026TXI · Full1SERGIO VARELA MALDONADO 72522637AX2M/MX
Feb 9, 2026USI · Full0SERGIO VARELA MALDONADO 72522637AX2M/MX
Dec 18, 2025TXI · Full1OOSSERGIO VARELA MALDONADO 72522637AX2M/CI
Nov 6, 2025TXI · Full0SERGIO VARELA MALDONADO 72522637AX2M/CI
Oct 9, 2025TXIII · Driver-only0SERGIO VARELA MALDONADO 72522637AX2M/MX
Sep 17, 2025TXI · Full1SERGIO VARELA MALDONADO 72522637AX2M/MX
Sep 12, 2025NMIII · Driver-only0SERGIO VARELA MALDONADO 72522637AX2M/MX
Sep 12, 2025TXIII · Driver-only1SERGIO VARELA MALDONADO 72522637AX2M/DF
Sep 11, 2025TXI · Full0SERGIO VARELA MALDONADO 72522637AX2M/CI
Aug 8, 2025TXI · Full4SERGIO VARELA MALDONADO 72522637AX2M/MX
Aug 7, 2025TXI · Full2SERGIO VARELA MALDONADO 72522637AX2M/MX
Aug 1, 2025TXI · Full0SERGIO VARELA MALDONADO 72522637AX2M/MX
Jul 24, 2025TXI · Full2SERGIO VARELA MALDONADO 72522637AX2M/MX
Apr 30, 2025USI · Full0SERGIO VARELA MALDONADO 72522637AX2M/MX
Apr 21, 2025TXI · Full1SERGIO VARELA MALDONADO 72522637AX2M/DF
Apr 9, 2025TXI · Full1SERGIO VARELA MALDONADO 72522637AX2M/MX
Feb 14, 2025TXI · Full2SERGIO VARELA MALDONADO 72522637AX2M/MX
Jan 6, 2025USI · Full0SERGIO VARELA MALDONADO 72522637AX2M/MX
Dec 19, 2024TXI · Full1SERGIO VARELA MALDONADO 72522637AX2M/MX
Dec 2, 2024TXI · Full1SERGIO VARELA MALDONADO 72522637AX2M/MX
Oct 30, 2024USI · Full0SERGIO VARELA MALDONADO 72522637AX2M/MX
May 16, 2024TXI · Full1SERGIO VARELA MALDONADO 72522637AX2M/MX
Nov 3, 2023USI · Full1SERGIO VARELA MALDONADO 72522637AX2M/MX
Oct 12, 2023TXII · Walk-around1SERGIO VARELA MALDONADO 72522637AX2M/MX
Sep 12, 2023USI · Full2OOSSERGIO VARELA MALDONADO 72522637AX2M/MX
Jul 6, 2023USI · Full7OOSSERGIO VARELA MALDONADO 72522637AX2M/MX
Jun 28, 2023TXI · Full2SERGIO VARELA MALDONADO 72522637AX2M/CI
Jun 26, 2023TXI · Full1SERGIO VARELA MALDONADO 72522637AX2M/CI
Jun 23, 2023TXI · Full3SERGIO VARELA MALDONADO 72522637AX2M/CI
Jun 19, 2023NMII · Walk-around2SERGIO VARELA MALDONADO 72522637AX2M/MX
Jun 15, 2023NMIII · Driver-only0SERGIO VARELA MALDONADO 72522637AX2M/MX
Jun 13, 2023TXI · Full5SERGIO VARELA MALDONADO 72522637AX2M/MX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
LIDER TRACK SA DE CV3535525May 15, 2026Aug 4, 20265CI
SERGIO VARELA MALDONADO725226Jun 13, 2023May 6, 202638CI
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.
37AX2MMX1LIDER TRACK SA DE CVMay 15, 2026Aug 4, 20265
37AX2MMXSERGIO VARELA MALDONADOJun 13, 2023May 6, 202628
37AX2MCISERGIO VARELA MALDONADOJun 23, 2023Apr 7, 20268
37AX2MDFSERGIO VARELA MALDONADOApr 21, 2025Sep 12, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 14, 2026