Equipment unit · VIN-decoded · NHTSA vPIC

2023 Great Dane Trailers

1GR1A0621PB435883 · Trailer · TRAILER
Everest (reefer)
Carriers run under3
10 mo
Inspections3
all-time
OOS inspections0
of 3
First seenDec 17, 2024
IN
Last seenOct 15, 2025
OR
Inspected under 3 different carriers in 10 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
1GR1A0621PB435883
Make
Great Dane Trailers
Model
Great Dane Trailers
Model year
2023
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 19, 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
1A062

Deterministic · VIN positions 4–8.

Check digit
1 · valid

Deterministic · position 9; calculated value 1.

Model year candidates
1993 or 2023

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

North American serial sequence
435883

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
GREAT DANE TRAILERS

Prefix basis · 13,972 decoded VINs at 100.0% prefix purity.

Model
Great Dane Trailers

Prefix basis · 13,972 decoded VINs at 100.0% prefix purity.

Model line
Everest (reefer)

Sourced label · prefix basis 13,972 decoded VINs at 100.0% prefix purity.

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
2023

Observed directly for this VIN via NHTSA vPIC.

Observed make
GREAT DANE TRAILERS

Observed directly for this VIN via NHTSA vPIC.

Observed model
Great Dane 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

  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Dec 17, 2024 – Oct 15, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 15, 2025ORI · Full0ZW MEGA TRUCKING INC 4222286PB55891/IN
May 7, 2025MSIII · Driver-only0ALPHA CARRIER LLC 4008627PB55891/IN
Dec 17, 2024INIII · Driver-only1ISSYKKUL EXPRESS INCORPORATED 3167120PB55891/IN
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ZW MEGA TRUCKING INC4222286Oct 15, 2025Oct 15, 20251CA
ALPHA CARRIER LLC4008627May 7, 2025May 7, 20251TN
ISSYKKUL EXPRESS INCORPORATED3167120Dec 17, 2024Dec 17, 20241IL
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.
PB55891INZW MEGA TRUCKING INCOct 15, 2025Oct 15, 20251
PB55891INALPHA CARRIER LLCMay 7, 2025May 7, 20251
PB55891INISSYKKUL EXPRESS INCORPORATEDDec 17, 2024Dec 17, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 19, 2026