Equipment unit · VIN-decoded · NHTSA vPIC

1999 Freightliner Long Conv.

1FUPCSZB6XPB84430 · Truck-Tractor · TRUCK
Carriers run under2
31 mo
Inspections7
all-time
OOS inspections2
of 7
First seenAug 2, 2023
TX
Last seenMar 20, 2026
TX
Inspected under 2 different carriers in 31 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
1FUPCSZB6XPB84430
Make
Freightliner
Model
Long Conv.
Model year
1999
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 21, 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
1FU

Deterministic · VIN positions 1–3.

Vehicle descriptor section
PCSZB

Deterministic · VIN positions 4–8.

Check digit
6 · valid

Deterministic · position 9; calculated value 6.

Model year candidates
1999 or 2029

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

North American serial sequence
B84430

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
FREIGHTLINER

Prefix basis · 1,104 decoded VINs at 100.0% prefix purity.

Model
Long Conv.

Prefix basis · 1,104 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
1999

Observed directly for this VIN via NHTSA vPIC.

Observed make
FREIGHTLINER

Observed directly for this VIN via NHTSA vPIC.

Observed model
Long Conv.

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

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 · Aug 2, 2023 – Mar 20, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 20, 2026TXII · Walk-around12OOSEXTREME TRUCKING 1 INC 298830594U648N/TX
Nov 14, 2025TXII · Walk-around0EXTREME TRUCKING 1 INC 298830517R448N/TX
Jul 30, 2025TXII · Walk-around7EXTREME TRUCKING 1 INC 29883051M70899/TX
Oct 2, 2024TXII · Walk-around9LUIS DIEPA 256778865R772M/TX
Jul 2, 2024TXII · Walk-around4LUIS DIEPA 25677881M70899/TX
Feb 20, 2024TXII · Walk-around0LUIS DIEPA 25677881M70899/TX
Aug 2, 2023TXII · Walk-around6OOSLUIS DIEPA 25677881M70899/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
EXTREME TRUCKING 1 INC2988305Jul 30, 2025Mar 20, 20263TX
LUIS DIEPA2567788Aug 2, 2023Oct 2, 20244TX
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.
94U648NTXEXTREME TRUCKING 1 INCMar 20, 2026Mar 20, 20261
17R448NTXEXTREME TRUCKING 1 INCNov 14, 2025Nov 14, 20251
1M70899TXEXTREME TRUCKING 1 INCJul 30, 2025Jul 30, 20251
65R772MTXLUIS DIEPAOct 2, 2024Oct 2, 20241
1M70899TXLUIS DIEPAAug 2, 2023Jul 2, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026