Equipment unit · VIN-decoded · NHTSA vPIC

1990 Great Dane Trailers

1GR1A082XLW212984 · TRAILER
Carriers run under2
27 mo
Inspections4
all-time
OOS inspections1
of 4
First seenJan 1, 2024
OH
Last seenApr 3, 2026
NJ
Inspected under 2 different carriers in 27 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
1GR1A082XLW212984
Make
Great Dane Trailers
Model
Not decoded
Model year
1990
Body class
Not decoded
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 5, 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
1GR

Deterministic · VIN positions 1–3.

Vehicle descriptor section
1A082

Deterministic · VIN positions 4–8.

Check digit
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
1990 or 2020

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

North American serial sequence
212984

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
1990

Observed directly for this VIN via NHTSA vPIC.

Observed make
GREAT DANE TRAILERS

Observed directly for this VIN via NHTSA vPIC.

Observed model
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Not established

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 · Jan 1, 2024 – Apr 3, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 3, 2026NJII · Walk-around0DENNIS DIEFENDERFER RODNEY DIEFENDERFER AND JOSEPH DIEFENDERFER 853580PT748J7/PA
Dec 3, 2025WIII · Walk-around2TRIPLE M EXPRESS INC 2579311PT748J7/PA
May 1, 2025PAII · Walk-around10OOSTRIPLE M EXPRESS INC 2579311PT748J7/PA
Jan 1, 2024OHIII · Driver-only0TRIPLE M EXPRESS INC 2579311PT748J7/PA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
DENNIS DIEFENDERFER RODNEY DIEFENDERFER AND JOSEPH DIEFENDERFER853580Apr 3, 2026Apr 3, 20261PA
TRIPLE M EXPRESS INC2579311Jan 1, 2024Dec 3, 20253NJ
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.
PT748J7PADENNIS DIEFENDERFER RODNEY DIEFENDERFER AND JOSEPH DIEFENDERFERApr 3, 2026Apr 3, 20261
PT748J7PATRIPLE M EXPRESS INCJan 1, 2024Dec 3, 20253
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 5, 2026