Equipment unit · VIN-decoded · NHTSA vPIC

1997 Peterbilt 385

1XPGDT9X0VN428504 · Truck-Tractor · TRUCK
Carriers run under2
16 mo
Inspections2
all-time
OOS inspections0
of 2
First seenApr 9, 2025
WA
Last seenAug 25, 2026
WA
Inspected under 2 different carriers in 16 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
1XPGDT9X0VN428504
Make
Peterbilt
Model
385
Model year
1997
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Sep 6, 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
1XP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
GDT9X

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
1997 or 2027

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

North American serial sequence
428504

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
PETERBILT

Prefix basis · 9 decoded VINs at 100.0% prefix purity.

Model
385

Prefix basis · 9 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
1997

Observed directly for this VIN via NHTSA vPIC.

Observed make
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
385

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 · Apr 9, 2025 – Aug 25, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Aug 25, 2026WAI · Full0SIX ROBBLEE'S INC 335507D67381J/WA
Apr 9, 2025WAIII · Driver-only2TACOMA & FIFE TRAILER REPAIR 1801032NO PLATE/WA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SIX ROBBLEE'S INC335507Aug 25, 2026Aug 25, 20261WA
TACOMA & FIFE TRAILER REPAIR1801032Apr 9, 2025Apr 9, 20251WA
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.
D67381JWA1SIX ROBBLEE'S INCAug 25, 2026Aug 25, 20261
NO PLATEWATACOMA & FIFE TRAILER REPAIRApr 9, 2025Apr 9, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Sep 6, 2026