Equipment unit · VIN-decoded · NHTSA vPIC

2018 Peterbilt 389

1NPXLP9X3JD463803 · Truck · INCOMPLETE VEHICLE
Carriers run under1
34 mo
Inspections8
all-time
OOS inspections2
of 8
First seenAug 22, 2023
CO
Last seenJun 11, 2026
MT
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1NPXLP9X3JD463803
Make
Peterbilt
Model
389
Model year
2018
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
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
1NP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
XLP9X

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
1988 or 2018

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

North American serial sequence
463803

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 · 995 decoded VINs at 100.0% prefix purity.

Model
389

Prefix basis · 995 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
2018

Observed directly for this VIN via NHTSA vPIC.

Observed make
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
389

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
INCOMPLETE VEHICLE

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 22, 2023 – Jun 11, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 11, 2026MTIII · Driver-only0SIERRA MOUNTAIN TRANSPORT INC 3983150SA11179/MT
Feb 27, 2026MTII · Walk-around1OOSSIERRA MOUNTAIN TRANSPORT INC 3983150SA11179/MT
Mar 6, 2025COI · Full4SIERRA MOUNTAIN TRANSPORT INC 3983150YASM029/WA
Apr 29, 2024MTIII · Driver-only0SIERRA MOUNTAIN TRANSPORT INC 3983150YASM029/OR
Mar 10, 2024WYII · Walk-around4SIERRA MOUNTAIN TRANSPORT INC 3983150YASM029/OR
Oct 8, 2023IAII · Walk-around4OOSSIERRA MOUNTAIN TRANSPORT INC 3983150YASM029/OR
Sep 8, 2023SDIII · Driver-only1SIERRA MOUNTAIN TRANSPORT INC 3983150YASM029/OR
Aug 22, 2023COIII · Driver-only0SIERRA MOUNTAIN TRANSPORT INC 3983150NW75762/OR
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SIERRA MOUNTAIN TRANSPORT INC3983150Aug 22, 2023Jun 11, 20268FL
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.
SA11179MT1SIERRA MOUNTAIN TRANSPORT INCFeb 27, 2026Jun 11, 20262
YASM029WASIERRA MOUNTAIN TRANSPORT INCMar 6, 2025Mar 6, 20251
YASM029ORSIERRA MOUNTAIN TRANSPORT INCSep 8, 2023Apr 29, 20244
NW75762ORSIERRA MOUNTAIN TRANSPORT INCAug 22, 2023Aug 22, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026