Equipment unit · VIN-decoded · NHTSA vPIC

2020 Peterbilt 389

1NPXL49X2LD636633 · Truck · INCOMPLETE VEHICLE
Carriers run under2
21 mo
Inspections4
all-time
OOS inspections0
of 4
First seenAug 22, 2023
MD
Last seenMay 29, 2025
TN
Inspected under 2 different carriers in 21 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
1NPXL49X2LD636633
Make
Peterbilt
Model
389
Model year
2020
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 7, 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
2 · valid

Deterministic · position 9; calculated value 2.

Model year candidates
1990 or 2020

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

North American serial sequence
636633

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
2020

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 – May 29, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
May 29, 2025TNI · Full2SHEPHARDS AUTO TRANSPORT LLC 2553082R8155HY/TN
Apr 14, 2025VAIII · Driver-only11APEX AUTO TRANSPORT LLC 877305854F54/MD
Nov 25, 2024MDII · Walk-around0APEX AUTO TRANSPORT LLC 877305854F54/MD
Aug 22, 2023MDI · Full0APEX AUTO TRANSPORT LLC 877305854F54/MD
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SHEPHARDS AUTO TRANSPORT LLC2553082May 29, 2025May 29, 20251TN
APEX AUTO TRANSPORT LLC877305Aug 22, 2023Apr 14, 20253MD
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.
R8155HYTNSHEPHARDS AUTO TRANSPORT LLCMay 29, 2025May 29, 20251
854F54MDAPEX AUTO TRANSPORT LLCAug 22, 2023Apr 14, 20253
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 7, 2026