Equipment unit · VIN-decoded · NHTSA vPIC

2025 Great Lakes Trailers

1G9DA4201SS139571 · Trailer · TRAILER
Carriers run under1
26 mo
Inspections7
all-time
OOS inspections3
of 7
First seenOct 31, 2023
WI
Last seenDec 8, 2025
WI
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1G9DA4201SS139571
Make
Great Lakes Trailers
Model
Great Lakes Trailers
Model year
2025
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 18, 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
1G9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
DA420

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1995 or 2025

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

North American serial sequence
139571

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
2025

Observed directly for this VIN via NHTSA vPIC.

Observed make
GREAT LAKES TRAILERS

Observed directly for this VIN via NHTSA vPIC.

Observed model
Great Lakes Trailers

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Trailer

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

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 – Dec 8, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Dec 8, 2025WIII · Walk-around1OOSHARNISCH INC 151857785270/WI
Oct 8, 2025WIII · Walk-around6HARNISCH INC 151857785270/WI
Aug 15, 2025MNIII · Driver-only3HARNISCH INC 151857785270/WI
Mar 4, 2025WIII · Walk-around3HARNISCH INC 151857785270/WI
Mar 5, 2024WIII · Walk-around10HARNISCH INC 151857785270/WI
Feb 26, 2024WIII · Walk-around8OOSHARNISCH INC 151857785270/WI
Oct 31, 2023WIII · Walk-around4OOSHARNISCH INC 151857785270/WI
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HARNISCH INC151857Oct 31, 2023Dec 8, 20257WI
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.
785270WIHARNISCH INCOct 31, 2023Dec 8, 20257
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 18, 2026