Equipment unit · VIN-decoded · NHTSA vPIC

2019 Mack CHU (Pinnacle)

1M2AN07C5KM028518 · Truck · INCOMPLETE VEHICLE
Carriers run under2
36 mo
Inspections6
all-time
OOS inspections1
of 6
First seenJun 27, 2023
TX
Last seenJun 27, 2026
TX
Inspected under 2 different carriers in 36 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
1M2AN07C5KM028518
Make
Mack
Model
CHU (Pinnacle)
Model year
2019
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 29, 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
AN07C

Deterministic · VIN positions 4–8.

Check digit
5 · valid

Deterministic · position 9; calculated value 5.

Model year candidates
1989 or 2019

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

North American serial sequence
028518

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 · 45 decoded VINs at 100.0% prefix purity.

Model
CHU (Pinnacle)

Prefix basis · 45 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
2019

Observed directly for this VIN via NHTSA vPIC.

Observed make
MACK

Observed directly for this VIN via NHTSA vPIC.

Observed model
CHU (Pinnacle)

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 · Jun 27, 2023 – Jun 27, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 27, 2026TXII · Walk-around0SOUTH TEXAS OIL FIELD SOLUTIONS LLC 23556941L52426/TX
May 1, 2026TXII · Walk-around0SOUTH TEXAS OIL FIELD SOLUTIONS LLC 23556941L52426/TX
Feb 15, 2026TXII · Walk-around1SOUTH TEXAS OIL FIELD SOLUTIONS LLC 23556941L52426/TX
Nov 20, 2025TXII · Walk-around2OOSSOUTH TEXAS OIL FIELD SOLUTIONS LLC 23556941L52426/TX
May 27, 2025TXII · Walk-around1SOUTH TEXAS OIL FIELD SOLUTIONS LLC 23556941L52426/TX
Jun 27, 2023TXII · Walk-around3STAYCARGO EXPRESS LLC 28962401M20512/TX
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SOUTH TEXAS OIL FIELD SOLUTIONS LLC2355694May 27, 2025Jun 27, 20265TX
STAYCARGO EXPRESS LLC2896240Jun 27, 2023Jun 27, 20231TX
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.
1L52426TX1SOUTH TEXAS OIL FIELD SOLUTIONS LLCMay 27, 2025Jun 27, 20265
1M20512TXSTAYCARGO EXPRESS LLCJun 27, 2023Jun 27, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 29, 2026