Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBDP9X2MD741835 · Truck-Tractor · TRUCK
Carriers run under3
34 mo
Inspections5
all-time
OOS inspections1
of 5
First seen07/07/2023
TX
Last seen05/26/2026
MI
Inspected under 3 different carriers in 34 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
1XPBDP9X2MD741835
Make
Peterbilt
Model
579
Model year
2021
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
06/29/2026
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 · 07/07/2023 – 05/26/2026

DateStateLevelViol.OOSCarrier (DOT)Plate
05/26/2026MIIII · Driver-only0—SCHILLER TRANSPORTATION LLC 3514066P1257026/IL
03/31/2026INIII · Driver-only1—CHITOWN TRANS INC 3560741P1257026/IL
12/08/2025MSII · Walk-around0—CHITOWN TRANS INC 3560741P1257026/IL
06/23/2025TNI · Full1OOSSCHILLER TRANSPORTATION LLC 3514066P1257026/IL
07/07/2023TXII · Walk-around0—SHROCK TRUCKING INC 167559712KR1Y/MO
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SCHILLER TRANSPORTATION LLC351406606/23/202505/26/20262IL
CHITOWN TRANS INC356074112/08/202503/31/20262IL
SHROCK TRUCKING INC167559707/07/202307/07/20231MO
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.
P1257026IL—SCHILLER TRANSPORTATION LLC06/23/2025 → 05/26/20262
P1257026IL—CHITOWN TRANS INC12/08/2025 → 03/31/20262
12KR1YMO—SHROCK TRUCKING INC07/07/2023 → 07/07/20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded 06/29/2026