Equipment unit · VIN-decoded · NHTSA vPIC

1989 Navistar 1754

1HTLCZWP2KH663591 · Truck · INCOMPLETE VEHICLE
Carriers run under1
29 mo
Inspections4
all-time
OOS inspections4
of 4
First seenDec 12, 2023
WI
Last seenMay 25, 2026
WI
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1HTLCZWP2KH663591
Make
Navistar
Model
1754
Model year
1989
Body class
Truck
Vehicle type
INCOMPLETE VEHICLE
GVWR
Class 7: 26,001 - 33,000 lb (11,794 - 14,969 kg)
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
1HT

Deterministic · VIN positions 1–3.

Vehicle descriptor section
LCZWP

Deterministic · VIN positions 4–8.

Check digit
2 · valid

Deterministic · position 9; calculated value 2.

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
663591

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.

Not established

No supported platform claim is established for this prefix

The resolver answered successfully but returned no row above the evidence floor. This does not mean the vehicle has no platform or that no data exists; it means this store cannot make the claim.

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
1989

Observed directly for this VIN via NHTSA vPIC.

Observed make
NAVISTAR

Observed directly for this VIN via NHTSA vPIC.

Observed model
1754

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 7: 26,001 - 33,000 lb (11,794 - 14,969 kg)

Observed directly for this VIN via NHTSA vPIC.

Not established

  • platform make
  • platform model
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Dec 12, 2023 – May 25, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
May 25, 2026WII · Full11OOSHIDDEN VALLEY TREE SERVICE LLC 3441676GD86775/WI
Oct 27, 2025WII · Full10OOSHIDDEN VALLEY TREE SERVICE LLC 3441676GD86775/WI
Apr 30, 2025WII · Full12OOSHIDDEN VALLEY TREE SERVICE LLC 3441676DG86775/WI
Dec 12, 2023WIII · Walk-around3OOSHIDDEN VALLEY TREE SERVICE LLC 3441676GD86775/WI
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
HIDDEN VALLEY TREE SERVICE LLC3441676Dec 12, 2023May 25, 20264WI
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.
GD86775WIHIDDEN VALLEY TREE SERVICE LLCDec 12, 2023May 25, 20263
DG86775WIHIDDEN VALLEY TREE SERVICE LLCApr 30, 2025Apr 30, 20251
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 5, 2026