Equipment unit · VIN-decoded · NHTSA vPIC

2023 Peterbilt 579

1XPBDP9X6PD799953 · Truck-Tractor · TRUCK
Carriers run under2
22 mo
Inspections5
all-time
OOS inspections0
of 5
First seenJun 24, 2023
AR
Last seenApr 28, 2025
LA
Inspected under 2 different carriers in 22 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
1XPBDP9X6PD799953
Make
Peterbilt
Model
579
Model year
2023
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 5, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
02

Inspection history

Every roadside inspection of this VIN, newest first · Jun 24, 2023 – Apr 28, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 28, 2025LAII · Walk-around1—SERVICE INTERNATIONAL OF SWLA LLC 23753807593L85/TX
Feb 2, 2024MTII · Walk-around1—TMZ TRANSPORTATION GROUP LLC 3491600R603368/TX
Aug 23, 2023KSII · Walk-around0—TMZ TRANSPORTATION GROUP LLC 3491600R603368/TX
Jul 31, 2023ALII · Walk-around3—TMZ TRANSPORTATION GROUP LLC 3491600R603368/TX
Jun 24, 2023ARIII · Driver-only3—TMZ TRANSPORTATION GROUP LLC 3491600R603368/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SERVICE INTERNATIONAL OF SWLA LLC2375380Apr 28, 2025Apr 28, 20251LA
TMZ TRANSPORTATION GROUP LLC3491600Jun 24, 2023Feb 2, 20244TX
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.
7593L85TX1SERVICE INTERNATIONAL OF SWLA LLCApr 28, 2025 → Apr 28, 20251
R603368TX—TMZ TRANSPORTATION GROUP LLCJun 24, 2023 → Feb 2, 20244
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 5, 2026