Equipment unit · VIN-decoded · NHTSA vPIC

1983 Kenworth 548CH

3WKHDN9X5DF383480 · Truck-Tractor · TRUCK
Carriers run under2
29 mo
Inspections26
all-time
OOS inspections2
of 26
First seenAug 1, 2023
CA
Last seenJan 21, 2026
CA
Inspected under 2 different carriers in 29 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
3WKHDN9X5DF383480
Make
Kenworth
Model
548CH
Model year
1983
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
HDN9X

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

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
383480

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
1983

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
548CH

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 · Aug 1, 2023 – Jan 21, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jan 21, 2026CAII · Walk-around0SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Jan 6, 2026USIII · Driver-only0SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Dec 30, 2025CAI · Full0SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Dec 26, 2025CAI · Full1SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Dec 19, 2025CAI · Full3SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Oct 2, 2025CAIII · Driver-only0SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Sep 30, 2025CAI · Full0SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Sep 29, 2025CAI · Full3OOSSIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Jul 3, 2025CAIII · Driver-only1SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
May 15, 2025CAI · Full1SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
May 8, 2025CAIII · Driver-only1SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Oct 26, 2024CAI · Full0SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Oct 23, 2024CAIII · Driver-only0SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Oct 22, 2024CAI · Full1SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Jul 19, 2024CAI · Full0SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Jul 11, 2024CAI · Full0SERVIN TRUCKING EXPRESS LLC 29557949F86637/CA
Jul 10, 2024CAI · Full3SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Jul 10, 2024CAI · Full4SERVIN TRUCKING EXPRESS LLC 29557949F86637/CA
Jan 23, 2024CAIII · Driver-only0SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Dec 19, 2023USI · Full0SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Nov 24, 2023CAI · Full0SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Nov 22, 2023CAI · Full2SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Sep 27, 2023CAIII · Driver-only1OOSSIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Aug 24, 2023CAI · Full0SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Aug 22, 2023CAI · Full3SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
Aug 1, 2023CAIII · Driver-only0SIXTO ALFONSO FELIX LOPEZ 7472629F86637/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SIXTO ALFONSO FELIX LOPEZ747262Aug 1, 2023Jan 21, 202624BN
SERVIN TRUCKING EXPRESS LLC2955794Jul 10, 2024Jul 11, 20242CA
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.
9F86637CASIXTO ALFONSO FELIX LOPEZAug 1, 2023Jan 21, 202624
9F86637CASERVIN TRUCKING EXPRESS LLCJul 10, 2024Jul 11, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 14, 2026