Equipment unit · VIN-decoded · NHTSA vPIC

2023 Mack Granite

1M2GR2GC4PM032853 · Truck · INCOMPLETE VEHICLE
Carriers run under2
32 mo
Inspections10
all-time
OOS inspections0
of 10
First seenOct 13, 2023
OK
Last seenJun 10, 2026
OK
Inspected under 2 different carriers in 32 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
1M2GR2GC4PM032853
Make
Mack
Model
Granite
Model year
2023
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 23, 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
1M2

Deterministic · VIN positions 1–3.

Vehicle descriptor section
GR2GC

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

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
032853

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 · 2,045 decoded VINs at 100.0% prefix purity.

Model
Granite

Prefix basis · 2,045 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
Granite

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
INCOMPLETE VEHICLE

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 · Oct 13, 2023 – Jun 10, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 10, 2026OKII · Walk-around2ALLIED WASTE SYSTEMS INC 237997737343/OK
May 12, 2026OKI · Full0ALLIED WASTE SYSTEMS INC 237997737343/OK
May 12, 2026OKI · Full0ALLIED WASTE SYSTEMS INC 237997737343/OK
May 12, 2026OKI · Full0ALLIED WASTE SYSTEMS INC 237997737343/OK
Mar 19, 2026OKII · Walk-around0ALLIED WASTE SYSTEMS INC 237997737343/OK
Jan 5, 2026OKIII · Driver-only3SHAMROCK ENVIRONMENTAL CORPORATION 576512737343/OK
Nov 8, 2024OKIII · Driver-only0SHAMROCK ENVIRONMENTAL CORPORATION 57651258C279/OK
Sep 17, 2024OKIII · Driver-only0SHAMROCK ENVIRONMENTAL CORPORATION 57651258C297/OK
Nov 3, 2023OKIII · Driver-only0SHAMROCK ENVIRONMENTAL CORPORATION 57651258C297/OK
Oct 13, 2023OKIII · Driver-only0SHAMROCK ENVIRONMENTAL CORPORATION 57651258C297/OK
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
ALLIED WASTE SYSTEMS INC237997Mar 19, 2026Jun 10, 20265AZ
SHAMROCK ENVIRONMENTAL CORPORATION576512Oct 13, 2023Jan 5, 20265NC
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.
737343OK1ALLIED WASTE SYSTEMS INCMar 19, 2026Jun 10, 20265
737343OK1SHAMROCK ENVIRONMENTAL CORPORATIONJan 5, 2026Jan 5, 20261
58C279OK1SHAMROCK ENVIRONMENTAL CORPORATIONNov 8, 2024Nov 8, 20241
58C297OK1SHAMROCK ENVIRONMENTAL CORPORATIONOct 13, 2023Sep 17, 20243
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 23, 2026