Equipment unit · VIN-decoded · NHTSA vPIC

2015 Peterbilt 579

1XPBDP9X1FD263393 · Truck-Tractor · TRUCK

Carriers run under2

28 mo

Inspections3

all-time

OOS inspections1

of 3

First seen07/13/2023

Last seen11/18/2025

Inspected under 2 different carriers in 28 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.

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN: 1XPBDP9X1FD263393
Make: Peterbilt
Model: 579
Model year: 2015
Body class: Truck-Tractor
Vehicle type: TRUCK
GVWR: Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at: 07/31/2026

vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.

Inspection history

Every roadside inspection of this VIN, newest first · 07/13/2023 – 11/18/2025

Date	State	Level	Viol.	OOS	Carrier (DOT)	Plate
11/18/2025	CO	II · Walk-around	1	—	WILLIAM M SCHIERLMAN 535334	247874/KS
10/06/2025	KS	III · Driver-only	1	—	WILLIAM M SCHIERLMAN 535334	247874/KS
07/13/2023	CA	I · Full	3	OOS	NEXGEN TRUCKING INC 3097644	YP53327/CA

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

Carrier	DOT	First seen	Last seen	Insp.	State
WILLIAM M SCHIERLMAN	535334	10/06/2025	11/18/2025	2	KS
NEXGEN TRUCKING INC	3097644	07/13/2023	07/13/2023	1	CA

Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.

Plate & unit-number history

The same truck under different plate registrations across carriers

Plate	State / prov.	Unit no.	Carrier	Date range	Insp.
247874	KS	—	WILLIAM M SCHIERLMAN	10/06/2025 → 11/18/2025	2
YP53327	CA	—	NEXGEN TRUCKING INC	07/13/2023 → 07/13/2023	1

Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded 07/31/2026