Equipment unit · VIN-decoded · NHTSA vPIC

Peterbilt 389

1NPXGGGG30D320551 · Incomplete - Glider · INCOMPLETE VEHICLE
Carriers run under2
36 mo
Inspections9
all-time
OOS inspections1
of 9
First seenOct 4, 2023
GA
Last seenOct 5, 2026
AR
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
1NPXGGGG30D320551
Make
Peterbilt
Model
389
Model year
—
Body class
Incomplete - Glider
Vehicle type
INCOMPLETE VEHICLE
GVWR
Not decoded
Decoded at
Jun 21, 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
1NP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
XGGGG

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
Not established

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

North American serial sequence
320551

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
PETERBILT

Prefix basis · 4,012 decoded VINs at 100.0% prefix purity.

Model
389

Prefix basis · 4,012 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.

Not established

  • model year
  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Oct 4, 2023 – Oct 5, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 5, 2026ARI · Full2OOSCEDAR HILL SERVICES LLC 897948K61640/AR
Jul 23, 2026ARIII · Driver-only0—CEDAR HILL SERVICES LLC 897948K61640/AR
Jun 10, 2026ARIII · Driver-only0—CEDAR HILL SERVICES LLC 897948K61640/AR
Apr 15, 2026ARIII · Driver-only1—CEDAR HILL SERVICES LLC 897948K61640/AR
Apr 7, 2026ARIII · Driver-only1—CEDAR HILL SERVICES LLC 897948K61640/AR
Jun 7, 2024GAIII · Driver-only1—THOMPSON CARRIERS INC 5239101208554/AL
Mar 21, 2024ALII · Walk-around1—THOMPSON CARRIERS INC 5239101208554/AL
Dec 20, 2023GAIII · Driver-only1—THOMPSON CARRIERS INC 5239101185810/AL
Oct 4, 2023GAIII · Driver-only1—THOMPSON CARRIERS INC 5239101185810/AL
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
CEDAR HILL SERVICES LLC897948Apr 7, 2026Oct 5, 20265AR
THOMPSON CARRIERS INC523910Oct 4, 2023Jun 7, 20244AL
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.
K61640AR1CEDAR HILL SERVICES LLCApr 7, 2026 → Oct 5, 20265
1208554AL—THOMPSON CARRIERS INCMar 21, 2024 → Jun 7, 20242
1185810AL—THOMPSON CARRIERS INCOct 4, 2023 → Dec 20, 20232
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026