Equipment unit · VIN-decoded · NHTSA vPIC

2023 Mack Anthem

1M1AN4GY3PM030377 · Truck-Tractor · TRUCK
Carriers run under2
25 mo
Inspections4
all-time
OOS inspections3
of 4
First seenMay 21, 2024
TX
Last seenJun 22, 2026
AZ
Inspected under 2 different carriers in 25 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
1M1AN4GY3PM030377
Make
Mack
Model
Anthem
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.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
1M1

Deterministic · VIN positions 1–3.

Vehicle descriptor section
AN4GY

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
1993 or 2023

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
030377

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Make
MACK

Prefix basis · 7,931 decoded VINs at 100.0% prefix purity.

Model
Anthem

Prefix basis · 7,931 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2023

Observed directly for this VIN via NHTSA vPIC.

Observed make
MACK

Observed directly for this VIN via NHTSA vPIC.

Observed model
Anthem

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

Observed directly for this VIN via NHTSA vPIC.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · May 21, 2024 – Jun 22, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 22, 2026AZII · Walk-around4OOSZERO GRAVITY TRANSPORTATION INC 3587489ZP81346/CA
Nov 28, 2025CAII · Walk-around3OOSZERO GRAVITY TRANSPORTATION INC 3587489ZP81346/CA
Jun 29, 2024AZII · Walk-around30OOSFLASH TRUCK LINES INC 2439688YP42794/CA
May 21, 2024TXII · Walk-around0FLASH TRUCK LINES INC 2439688YP42794/CA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ZERO GRAVITY TRANSPORTATION INC3587489Nov 28, 2025Jun 22, 20262CA
FLASH TRUCK LINES INC2439688May 21, 2024Jun 29, 20242CA
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.
ZP81346CA1ZERO GRAVITY TRANSPORTATION INCNov 28, 2025Jun 22, 20262
YP42794CAFLASH TRUCK LINES INCMay 21, 2024Jun 29, 20242
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 5, 2026