Equipment unit · VIN-decoded · NHTSA vPIC

2016 Mack CXU (Pinnacle)

1M1AW21Y4GM011718 · Truck-Tractor · TRUCK
Carriers run under2
25 mo
Inspections7
all-time
OOS inspections2
of 7
First seenAug 7, 2023
LA
Last seenSep 29, 2025
LA
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
1M1AW21Y4GM011718
Make
Mack
Model
CXU (Pinnacle)
Model year
2016
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 4, 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
AW21Y

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1986 or 2016

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

North American serial sequence
011718

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 · 352 decoded VINs at 100.0% prefix purity.

Model
CXU (Pinnacle)

Prefix basis · 352 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
2016

Observed directly for this VIN via NHTSA vPIC.

Observed make
MACK

Observed directly for this VIN via NHTSA vPIC.

Observed model
CXU (Pinnacle)

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 · Aug 7, 2023 – Sep 29, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Sep 29, 2025LAII · Walk-around2BEEMAC INC 388467PXB9228/OH
Oct 11, 2024LAII · Walk-around1OOSHIGH TIDE HAULING LLC 3638184A18279/WY
Sep 27, 2024LAIII · Driver-only0HIGH TIDE HAULING LLC 3638184A18279/WY
Apr 22, 2024LAII · Walk-around0HIGH TIDE HAULING LLC 3638184A18279/WY
Jan 9, 2024LAII · Walk-around0HIGH TIDE HAULING LLC 3638184A18279/WY
Sep 11, 2023LAII · Walk-around0HIGH TIDE HAULING LLC 3638184A18279/WY
Aug 7, 2023LAII · Walk-around2OOSHIGH TIDE HAULING LLC 3638184S1593167/GA
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
BEEMAC INC388467Sep 29, 2025Sep 29, 20251PA
HIGH TIDE HAULING LLC3638184Aug 7, 2023Oct 11, 20246WY
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.
PXB9228OHBEEMAC INCSep 29, 2025Sep 29, 20251
A18279WY1HIGH TIDE HAULING LLCSep 11, 2023Oct 11, 20245
S1593167GA1HIGH TIDE HAULING LLCAug 7, 2023Aug 7, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 4, 2026