Equipment unit · VIN-decoded · NHTSA vPIC

2015 Isuzu NPR/NPR-HD

54DC4W1C3FS806534 · Truck · INCOMPLETE VEHICLE
Carriers run under2
18 mo
Inspections2
all-time
OOS inspections1
of 2
First seenDec 12, 2023
WA
Last seenJun 21, 2025
WA
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
54DC4W1C3FS806534
Make
Isuzu
Model
NPR/NPR-HD
Model year
2015
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 4: 14,001 - 16,000 lb (6,350 - 7,258 kg)
Decoded at
Sep 20, 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
54D

Deterministic · VIN positions 1–3.

Vehicle descriptor section
C4W1C

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
1985 or 2015

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

North American serial sequence
806534

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
ISUZU

Prefix basis · 124 decoded VINs at 96.0% prefix purity.

Model
NPR/NPR-HD

Prefix basis · 124 decoded VINs at 96.0% 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.

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
2015

Observed directly for this VIN via NHTSA vPIC.

Observed make
ISUZU

Observed directly for this VIN via NHTSA vPIC.

Observed model
NPR/NPR-HD

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
INCOMPLETE VEHICLE

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 4: 14,001 - 16,000 lb (6,350 - 7,258 kg)

Observed directly for this VIN via NHTSA vPIC.

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 · Dec 12, 2023 – Jun 21, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 21, 2025WAIII · Driver-only1—BOSS ROOFING LLC 3636840D65675G/WA
Dec 12, 2023WAI · Full4OOSFROG HILL ROOFING LLC 1988156C20359X/WA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BOSS ROOFING LLC3636840Jun 21, 2025Jun 21, 20251WA
FROG HILL ROOFING LLC1988156Dec 12, 2023Dec 12, 20231WA
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.
D65675GWA—BOSS ROOFING LLCJun 21, 2025 → Jun 21, 20251
C20359XWA—FROG HILL ROOFING LLCDec 12, 2023 → Dec 12, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Sep 20, 2026