Equipment unit · VIN-decoded · NHTSA vPIC

2009 Kenworth T8 Series

1XKDD49X79J258931 · Truck-Tractor · TRUCK
T800
Carriers run under2
30 mo
Inspections5
all-time
OOS inspections0
of 5
First seenFeb 26, 2024
IL
Last seenAug 4, 2026
IL
Inspected under 2 different carriers in 30 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
1XKDD49X79J258931
Make
Kenworth
Model
T8 Series
Model year
2009
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 10, 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
DD49X

Deterministic · VIN positions 4–8.

Check digit
7 · valid

Deterministic · position 9; calculated value 7.

Model year candidates
2009 or 2039

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

North American serial sequence
258931

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 · 1,944 decoded VINs at 93.9% prefix purity.

Model
T8 Series

Prefix basis · 1,944 decoded VINs at 93.9% prefix purity.

Model line
T800

Sourced label · prefix basis 1,944 decoded VINs at 93.9% 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
2009

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T8 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 · Feb 26, 2024 – Aug 4, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 4, 2026ILIII · Driver-only0JNA TRUCKING SERVICES LLC 4405679P1270614/IL
Jan 28, 2026IAIII · Driver-only7JNA TRUCKING SERVICES LLC 4405679P1270614/IL
Dec 7, 2024ILII · Walk-around1ADCOCK BROTHERS AUTO TRANSPORT INC 540755P1270614/IL
Sep 16, 2024WIIII · Driver-only1ADCOCK BROTHERS AUTO TRANSPORT INC 5407553557X/IL
Feb 26, 2024ILIII · Driver-only2ADCOCK BROTHERS AUTO TRANSPORT INC 5407553557X/IL
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
JNA TRUCKING SERVICES LLC4405679Jan 28, 2026Aug 4, 20262IL
ADCOCK BROTHERS AUTO TRANSPORT INC540755Feb 26, 2024Dec 7, 20243PA
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.
P1270614IL1JNA TRUCKING SERVICES LLCJan 28, 2026Aug 4, 20262
P1270614IL1ADCOCK BROTHERS AUTO TRANSPORT INCDec 7, 2024Dec 7, 20241
3557XIL1ADCOCK BROTHERS AUTO TRANSPORT INCFeb 26, 2024Sep 16, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 10, 2026