Equipment unit · VIN-decoded · NHTSA vPIC

2024 Peterbilt 389

1NPXL49X4RD643401 · Truck · INCOMPLETE VEHICLE
Carriers run under1
29 mo
Inspections7
all-time
OOS inspections1
of 7
First seenOct 6, 2023
SD
Last seenMar 25, 2026
MT
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1NPXL49X4RD643401
Make
Peterbilt
Model
389
Model year
2024
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
XL49X

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

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
643401

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 · 1,328 decoded VINs at 100.0% prefix purity.

Model
389

Prefix basis · 1,328 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
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 · Oct 6, 2023 – Mar 25, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 25, 2026MTIII · Driver-only1SIERRA MOUNTAIN TRANSPORT INC 3983150SA11318/MT
Feb 4, 2026MTIII · Driver-only1SIERRA MOUNTAIN TRANSPORT INC 3983150SA10987/MT
Apr 23, 2025MTII · Walk-around1SIERRA MOUNTAIN TRANSPORT INC 3983150YASQ650/OR
Jun 12, 2024MNIII · Driver-only1SIERRA MOUNTAIN TRANSPORT INC 3983150YASQ650/OR
Feb 29, 2024SDIII · Driver-only0SIERRA MOUNTAIN TRANSPORT INC 3983150YANS199/OR
Feb 23, 2024SDII · Walk-around1OOSSIERRA MOUNTAIN TRANSPORT INC 3983150YASN199/OR
Oct 6, 2023SDIII · Driver-only2SIERRA MOUNTAIN TRANSPORT INC 3983150YASN199/OR
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SIERRA MOUNTAIN TRANSPORT INC3983150Oct 6, 2023Mar 25, 20267FL
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.
SA11318MTSIERRA MOUNTAIN TRANSPORT INCMar 25, 2026Mar 25, 20261
SA10987MTSIERRA MOUNTAIN TRANSPORT INCFeb 4, 2026Feb 4, 20261
YASQ650ORSIERRA MOUNTAIN TRANSPORT INCJun 12, 2024Apr 23, 20252
YANS199ORSIERRA MOUNTAIN TRANSPORT INCFeb 29, 2024Feb 29, 20241
YASN199ORSIERRA MOUNTAIN TRANSPORT INCOct 6, 2023Feb 23, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026