Equipment unit · VIN-decoded · NHTSA vPIC

2020 Peterbilt 579

1XPBD49X6LD661533 · Truck-Tractor · TRUCK
Carriers run under2
33 mo
Inspections5
all-time
OOS inspections2
of 5
First seenOct 23, 2023
AL
Last seenJul 1, 2026
TX
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.
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XPBD49X6LD661533
Make
Peterbilt
Model
579
Model year
2020
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 · Oct 23, 2023 – Jul 1, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 1, 2026TXII · Walk-around0—GRAY WOLF EXPRESS INC 356059251T822N/TX
Mar 6, 2025TXIII · Driver-only1—GRAY WOLF EXPRESS INC 356059278Z774V/TX
Jan 6, 2025TXI · Full5OOSGRAY WOLF EXPRESS INC 356059249U901M/TX
Jul 29, 2024TXIV · Special2—GRAY WOLF EXPRESS INC 356059293N652M/TX
Oct 23, 2023ALII · Walk-around2OOSFIRSTFLEET INC 3138912990673/IN
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
GRAY WOLF EXPRESS INC3560592Jul 29, 2024Jul 1, 20264TX
FIRSTFLEET INC313891Oct 23, 2023Oct 23, 20231TN
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.
51T822NTX1GRAY WOLF EXPRESS INCJul 1, 2026 → Jul 1, 20261
78Z774VTX—GRAY WOLF EXPRESS INCMar 6, 2025 → Mar 6, 20251
49U901MTX—GRAY WOLF EXPRESS INCJan 6, 2025 → Jan 6, 20251
93N652MTX—GRAY WOLF EXPRESS INCJul 29, 2024 → Jul 29, 20241
2990673IN—FIRSTFLEET INCOct 23, 2023 → Oct 23, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 12, 2026