Equipment unit · VIN-decoded · NHTSA vPIC

2021 Mack Anthem

1M1AN4GY7MM020379 · Truck-Tractor · TRUCK
Carriers run under2
31 mo
Inspections3
all-time
OOS inspections0
of 3
First seenDec 20, 2023
SC
Last seenJul 22, 2026
SD
Inspected under 2 different carriers in 31 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
1M1AN4GY7MM020379
Make
Mack
Model
Anthem
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 27, 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 · Dec 20, 2023 – Jul 22, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 22, 2026SDIII · Driver-only0—GSM TRANSPORT COMPANY 1489284P1284578/IL
Aug 21, 2025WIII · Walk-around3—GSM TRANSPORT COMPANY 1489284P1284578/IL
Dec 20, 2023SCII · Walk-around1—CHIEF EXPRESS LLC 759924NL5673/NC
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
GSM TRANSPORT COMPANY1489284Aug 21, 2025Jul 22, 20262IL
CHIEF EXPRESS LLC759924Dec 20, 2023Dec 20, 20231NC
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.
P1284578IL1GSM TRANSPORT COMPANYAug 21, 2025 → Jul 22, 20262
NL5673NC—CHIEF EXPRESS LLCDec 20, 2023 → Dec 20, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 27, 2026