Equipment unit · VIN-decoded · NHTSA vPIC

2013 Kenworth T6 Series

3WKAD79X9DF844290 · Truck-Tractor · TRUCK
Carriers run under2
18 mo
Inspections4
all-time
OOS inspections2
of 4
First seenOct 31, 2023
AZ
Last seenApr 15, 2025
CA
Inspected under 2 different carriers in 18 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
3WKAD79X9DF844290
Make
Kenworth
Model
T6 Series
Model year
2013
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 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
AD79X

Deterministic · VIN positions 4–8.

Check digit
9 · valid

Deterministic · position 9; calculated value 9.

Model year candidates
1983 or 2013

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

North American serial sequence
844290

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
2013

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

  • 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 · Oct 31, 2023 – Apr 15, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 15, 2025CAI · Full2OOSPOSTAL DELIVERY SYSTEMS LLC 24646169F80492/CA
Sep 28, 2024CAIII · Driver-only0POSTAL DELIVERY SYSTEMS LLC 24646169F80492/CA
Aug 16, 2024CAI · Full0POSTAL DELIVERY SYSTEMS LLC 24646169F80492/CA
Oct 31, 2023AZI · Full6OOSGABRIEL ARAIZA GUTIERREZ & JUAN GONZALEZ QUINTERO 10831179F80942/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
POSTAL DELIVERY SYSTEMS LLC2464616Aug 16, 2024Apr 15, 20253CA
GABRIEL ARAIZA GUTIERREZ & JUAN GONZALEZ QUINTERO1083117Oct 31, 2023Oct 31, 20231SO
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.
9F80492CAPOSTAL DELIVERY SYSTEMS LLCAug 16, 2024Apr 15, 20253
9F80942CAGABRIEL ARAIZA GUTIERREZ & JUAN GONZALEZ QUINTEROOct 31, 2023Oct 31, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 14, 2026