Equipment unit · VIN-decoded · NHTSA vPIC

1FVHALCK37DX56637

Not yet decoded
Carriers run under1
22 mo
Inspections2
all-time
OOS inspections2
of 2
First seenFeb 23, 2024
WA
Last seenDec 9, 2025
WA
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

This VIN has not been decoded yet — the unit's carrier, inspection and plate history below is reconstructed from the FMCSA inspection feed regardless.

Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
1FV

Deterministic · VIN positions 1–3.

Vehicle descriptor section
HALCK

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
2007 or 2037

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

North American serial sequence
X56637

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
FREIGHTLINER

Prefix basis · 28 decoded VINs at 100.0% prefix purity.

Model
FLD120

Prefix basis · 28 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

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.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Feb 23, 2024 – Dec 9, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 9, 2025WAII · Walk-around7OOSHOLT SERVICES INC 2068189C28276E/WA
Feb 23, 2024WAII · Walk-around3OOSHOLT SERVICES INC 2068189C28276E/WA
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HOLT SERVICES INC2068189Feb 23, 2024Dec 9, 20252WA
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.
C28276EWAHOLT SERVICES INCFeb 23, 2024Dec 9, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC