Equipment unit · VIN-decoded · NHTSA vPIC

2019 Peterbilt 579

1XPBD49X2KD633789 · Truck-Tractor · TRUCK
Carriers run under4
26 mo
Inspections8
all-time
OOS inspections4
of 8
First seenNov 7, 2023
WA
Last seenJan 6, 2026
CA
Inspected under 4 different carriers in 26 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
1XPBD49X2KD633789
Make
Peterbilt
Model
579
Model year
2019
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
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
1XP

Deterministic · VIN positions 1–3.

Vehicle descriptor section
BD49X

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
633789

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 · 26,166 decoded VINs at 100.0% prefix purity.

Model
579

Prefix basis · 26,166 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
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
579

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

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 · Nov 7, 2023 – Jan 6, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jan 6, 2026CAI · Full0AZAAD EXPRESS INC 4371562ZP43337/CA
Dec 9, 2025CAIII · Driver-only0AZAAD EXPRESS INC 4371562ZP43337/CA
Nov 4, 2025CAII · Walk-around0AZAAD EXPRESS INC 4371562ZP43337/CA
Jul 31, 2025CAIII · Driver-only1OOSMATTU08 TRANS INC 3655876ZP43337/CA
Jul 31, 2025CAIII · Driver-only0MATTU08 TRANS INC 3655876ZP43337/CA
Jun 25, 2024CAII · Walk-around1OOSCROSSROADS CARRIER INC 2161359ZP30716/CA
Jun 9, 2024CAI · Full2OOSCROSSROADS CARRIER INC 2161359ZP30716/CA
Nov 7, 2023WAII · Walk-around2OOSH TRANS INC 1038788YAIY339/OR
03

Carriers this unit has run under

4 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
AZAAD EXPRESS INC4371562Nov 4, 2025Jan 6, 20263CA
MATTU08 TRANS INC3655876Jul 31, 2025Jul 31, 20252CA
CROSSROADS CARRIER INC2161359Jun 9, 2024Jun 25, 20242CA
H TRANS INC1038788Nov 7, 2023Nov 7, 20231OR
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.
ZP43337CAAZAAD EXPRESS INCNov 4, 2025Jan 6, 20263
ZP43337CAMATTU08 TRANS INCJul 31, 2025Jul 31, 20252
ZP30716CACROSSROADS CARRIER INCJun 9, 2024Jun 25, 20242
YAIY339ORH TRANS INCNov 7, 2023Nov 7, 20231
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 21, 2026