Equipment unit · VIN-decoded · NHTSA vPIC

1999 Kenworth T800

3WKDDU9X2XF834054 · Truck-Tractor · TRUCK
Carriers run under1
28 mo
Inspections8
all-time
OOS inspections1
of 8
First seenFeb 28, 2024
TX
Last seenJun 10, 2026
TX
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
3WKDDU9X2XF834054
Make
Kenworth
Model
T800
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 21, 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
DDU9X

Deterministic · VIN positions 4–8.

Check digit
2 · valid

Deterministic · position 9; calculated value 2.

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
834054

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
T800

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 · Feb 28, 2024 – Jun 10, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 10, 2026TXII · Walk-around6YANEZ TRUCKING SERVICE 1957228TZK4951/TX
Feb 25, 2026TXII · Walk-around4YANEZ TRUCKING SERVICE 1957228TZK4951/TX
Feb 24, 2026TXII · Walk-around1YANEZ TRUCKING SERVICE 1957228TZK4951/TX
Feb 24, 2026TXI · Full4YANEZ TRUCKING SERVICE 1957228TZK4951/TX
Jan 23, 2025TXII · Walk-around5OOSYANEZ TRUCKING SERVICE 1957228TZK4951/TX
Oct 17, 2024TXI · Full1YANEZ TRUCKING SERVICE 1957228TZK4951/TX
Jun 13, 2024TXII · Walk-around4YANEZ TRUCKING SERVICE 1957228TZK4951/TX
Feb 28, 2024TXII · Walk-around3YANEZ TRUCKING SERVICE 1957228JTG1230/TX
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
YANEZ TRUCKING SERVICE1957228Feb 28, 2024Jun 10, 20268TX
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.
TZK4951TX1YANEZ TRUCKING SERVICEJun 13, 2024Jun 10, 20267
JTG1230TXYANEZ TRUCKING SERVICEFeb 28, 2024Feb 28, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026