Equipment unit · VIN-decoded · NHTSA vPIC

Peterbilt 389

1NPXGGGGX0D636996 · Incomplete - Glider · INCOMPLETE VEHICLE
Carriers run under2
30 mo
Inspections7
all-time
OOS inspections2
of 7
First seenDec 29, 2023
IA
Last seenJun 17, 2026
IL
Inspected under 2 different carriers in 30 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
1NPXGGGGX0D636996
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
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
Not established

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

North American serial sequence
636996

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.

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
Not established

Observed directly for this VIN via NHTSA vPIC.

Observed make
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
389

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Incomplete - Glider

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
INCOMPLETE VEHICLE

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

Observed directly for this VIN via NHTSA vPIC.

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 · Dec 29, 2023 – Jun 17, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jun 17, 2026ILIII · Driver-only1MIDWEST AUTO MOVERS INC 199391781339Z/WI
Dec 4, 2025IAIII · Driver-only4MIDWEST AUTO MOVERS INC 199391781339Z/WI
Dec 4, 2025MIIII · Driver-only2MIDWEST AUTO MOVERS INC 199391781339Z/WI
Apr 15, 2025MIIII · Driver-only0TRUES SERVICE INC 49896081339Z/WI
Jan 3, 2025IAIII · Driver-only1OOSMIDWEST AUTO MOVERS INC 199391781339Z/WI
Sep 24, 2024MIII · Walk-around1MIDWEST AUTO MOVERS INC 199391781339Z/WI
Dec 29, 2023IAII · Walk-around5OOSMIDWEST AUTO MOVERS INC 199391729986Z/WI
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MIDWEST AUTO MOVERS INC1993917Dec 29, 2023Jun 17, 20266WI
TRUES SERVICE INC498960Apr 15, 2025Apr 15, 20251MI
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.
81339ZWI1MIDWEST AUTO MOVERS INCSep 24, 2024Jun 17, 20265
81339ZWITRUES SERVICE INCApr 15, 2025Apr 15, 20251
29986ZWIMIDWEST AUTO MOVERS INCDec 29, 2023Dec 29, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026