Equipment unit · VIN-decoded · NHTSA vPIC

2012 Kenworth T6 Series

1XKAD49XXCJ301023 · Truck-Tractor · TRUCK
T600
Carriers run under1
32 mo
Inspections11
all-time
OOS inspections2
of 11
First seenJun 14, 2023
CO
Last seenFeb 12, 2026
KS
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XKAD49XXCJ301023
Make
Kenworth
Model
T6 Series
Model year
2012
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 17, 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
AD49X

Deterministic · VIN positions 4–8.

Check digit
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
1982 or 2012

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

North American serial sequence
301023

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
KENWORTH

Prefix basis · 5,142 decoded VINs at 90.1% prefix purity.

Model
T6 Series

Prefix basis · 5,142 decoded VINs at 90.1% prefix purity.

Model line
T600

Sourced label · prefix basis 5,142 decoded VINs at 90.1% prefix purity.

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
2012

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T6 Series

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

  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jun 14, 2023 – Feb 12, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Feb 12, 2026KSII · Walk-around2STEP EXPRESS INC 3113794YP90538/CA
Feb 4, 2026UTIII · Driver-only0STEP EXPRESS INC 3113794YP90538/CA
Jun 4, 2025CAIII · Driver-only1STEP EXPRESS INC 3113794YP90538/CA
Mar 23, 2025NMIII · Driver-only1OOSSTEP EXPRESS INC 3113794YP90538/CA
Mar 19, 2025ILIII · Driver-only0STEP EXPRESS INC 3113794YP90538/CA
Oct 29, 2024ILIII · Driver-only0STEP EXPRESS INC 3113794YP90538/CA
Oct 7, 2024NMII · Walk-around0STEP EXPRESS INC 3113794YP90538/CA
Aug 19, 2024TXII · Walk-around1STEP EXPRESS INC 3113794YP90538/CA
May 28, 2024CAV · Vehicle-only0STEP EXPRESS INC 3113794YP90538/CA
Nov 16, 2023NMI · Full5STEP EXPRESS INC 3113794YP90538/CA
Jun 14, 2023COIII · Driver-only4OOSSTEP EXPRESS INC 3113794YP90538/CA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
STEP EXPRESS INC3113794Jun 14, 2023Feb 12, 202611CA
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.
YP90538CASTEP EXPRESS INCJun 14, 2023Feb 12, 202611
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 17, 2026