Equipment unit · VIN-decoded · NHTSA vPIC

2024 Silverback Trailer SILVERBACK

4S9KC5336RH623498 · Trailer · TRAILER
Carriers run under4
17 mo
Inspections8
all-time
OOS inspections3
of 8
First seenNov 25, 2024
KY
Last seenApr 28, 2026
WY
Inspected under 4 different carriers in 17 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
4S9KC5336RH623498
Make
Silverback Trailer
Model
SILVERBACK
Model year
2024
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jun 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
4S9

Deterministic · VIN positions 1–3.

Vehicle descriptor section
KC533

Deterministic · VIN positions 4–8.

Check digit
6 · valid

Deterministic · position 9; calculated value 6.

Model year candidates
1994 or 2024

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

North American serial sequence
623498

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
SILVERBACK TRAILER

Prefix basis · 18 decoded VINs at 100.0% prefix purity.

Model
SILVERBACK

Prefix basis · 18 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.

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
2024

Observed directly for this VIN via NHTSA vPIC.

Observed make
SILVERBACK TRAILER

Observed directly for this VIN via NHTSA vPIC.

Observed model
SILVERBACK

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

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Nov 25, 2024 – Apr 28, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 28, 2026WYI · Full3VASPAN INC 41693391004989ST/IL
Apr 27, 2026MTIII · Driver-only1VASPAN INC 41693391004989ST/IL
Apr 2, 2026IDI · Full7VASPAN INC 41693391004989ST/IL
Mar 30, 2026ILIII · Driver-only0GOLLA GROUP LLC 45148201004989ST/IL
Mar 26, 2026COI · Full5OOSGOLLA GROUP LLC 45148201004989ST/IL
Jul 21, 2025MOII · Walk-around13OOSSUPLICIUM TRANSPORT LLC 43812551004989ST/IL
Dec 19, 2024OHI · Full3OOSBWI TECHNOLOGY INC 3779250994937ST/IL
Nov 25, 2024KYI · Full1BWI TECHNOLOGY INC 3779250994937ST/IL
03

Carriers this unit has run under

4 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
VASPAN INC4169339Apr 2, 2026Apr 28, 20263OH
GOLLA GROUP LLC4514820Mar 26, 2026Mar 30, 20262WA
SUPLICIUM TRANSPORT LLC4381255Jul 21, 2025Jul 21, 20251IL
BWI TECHNOLOGY INC3779250Nov 25, 2024Dec 19, 20242OH
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.
1004989STILVASPAN INCApr 2, 2026Apr 28, 20263
1004989STILGOLLA GROUP LLCMar 26, 2026Mar 30, 20262
1004989STILSUPLICIUM TRANSPORT LLCJul 21, 2025Jul 21, 20251
994937STILBWI TECHNOLOGY INCNov 25, 2024Dec 19, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 20, 2026