Equipment unit · VIN-decoded · NHTSA vPIC

2021 Peterbilt 579

1XPBDP9X4MD679693 · Truck-Tractor · TRUCK
Carriers run under2
22 mo
Inspections4
all-time
OOS inspections2
of 4
First seenJul 15, 2024
TN
Last seenMay 29, 2026
WI
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
1XPBDP9X4MD679693
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
Jul 12, 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 · Jul 15, 2024 – May 29, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 29, 2026WIIII · Driver-only1—US 1 TRUCKING 3985128P1327234/IL
Nov 18, 2025MOIII · Driver-only0—US 1 TRUCKING 3985128P1327234/IL
Nov 14, 2025WII · Full3OOSUS 1 TRUCKING 3985128P1327234/IL
Jul 15, 2024TNI · Full4OOSTEK TRANSPORT GROUP LLC 38310485892C93/UK
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
US 1 TRUCKING3985128Nov 14, 2025May 29, 20263IL
TEK TRANSPORT GROUP LLC3831048Jul 15, 2024Jul 15, 20241IL
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.
P1327234IL—US 1 TRUCKINGNov 14, 2025 → May 29, 20263
5892C93UK—TEK TRANSPORT GROUP LLCJul 15, 2024 → Jul 15, 20241
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026