1999 Harmon
Decoded identity
From the 17-character VIN via NHTSA vPIC
- VIN
- 1H9TT4320XL020811
- Make
- Harmon
- Model
- Not decoded
- Model year
- 1999
- Body class
- Not decoded
- Vehicle type
- TRAILER
- GVWR
- Not decoded
- Decoded at
- Sep 11, 2026
Decode evidence & sources
Deterministic structure
These fields come directly from VIN positions and the published checksum calculation, with zero store IO.
Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.
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.
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.
VIN-level rule claims
Rules published for individual VIN positions beyond the prefix — applied with the WMI, prefix, and model-year guards each rule was validated under. Model-year-scoped rules stay suppressed here because position 10 alone cannot establish the year.
The VIN-level rule resolver did not return a reliable response
Deterministic validation and the prefix-level results above are unaffected. An outage here is not evidence that no VIN-level rule applies.
Not established
- platform make
- platform model
- model line
- generation
- cab type
These are withheld claims, not negative findings.
Carriers this unit has run under
1 distinct carrier · grouped by DOT · newest activity first
Plate & unit-number history
The same truck under different plate registrations across carriers