Equipment unit · VIN-decoded · NHTSA vPIC

2017 Peterbilt 579

1XPBDP9XXHD432524 · Truck-Tractor · TRUCK

Carriers run under2

33 mo

Inspections4

all-time

OOS inspections1

of 4

First seen08/02/2023

Last seen05/28/2026

Inspected under 2 different carriers in 33 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: 1XPBDP9XXHD432524
Make: Peterbilt
Model: 579
Model year: 2017
Body class: Truck-Tractor
Vehicle type: TRUCK
GVWR: Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at: 07/12/2026

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 · 08/02/2023 – 05/28/2026

Date	State	Level	Viol.	OOS	Carrier (DOT)	Plate
05/28/2026	TX	II · Walk-around	4	OOS	SHOCKWAGON LLC 4086621	1N83781/TX
12/03/2025	TX	II · Walk-around	1	—	SHOCKWAGON LLC 4086621	1N83781/TX
07/04/2025	TX	II · Walk-around	2	—	SHOCKWAGON LLC 4086621	1N83781/TX
08/02/2023	KY	I · Full	0	—	KAG SPECIALTY PRODUCTS GROUP LLC 76483	PWE6456/OH

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

Carrier	DOT	First seen	Last seen	Insp.	State
SHOCKWAGON LLC	4086621	07/04/2025	05/28/2026	3	TX
KAG SPECIALTY PRODUCTS GROUP LLC	76483	08/02/2023	08/02/2023	1	OH

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.
1N83781	TX	—	SHOCKWAGON LLC	07/04/2025 → 05/28/2026	3
PWE6456	OH	1	KAG SPECIALTY PRODUCTS GROUP LLC	08/02/2023 → 08/02/2023	1

Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded 07/12/2026