Equipment unit · VIN-decoded · NHTSA vPIC

2023 Peterbilt 579

1XPBDP9X3PD837073 · Truck-Tractor · TRUCK
Carriers run under4
27 mo
Inspections23
all-time
OOS inspections5
of 23
First seenJan 3, 2024
WA
Last seenApr 22, 2026
CA
Inspected under 4 different carriers in 27 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
1XPBDP9X3PD837073
Make
Peterbilt
Model
579
Model year
2023
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 14, 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
BDP9X

Deterministic · VIN positions 4–8.

Check digit
3 · valid

Deterministic · position 9; calculated value 3.

Model year candidates
1993 or 2023

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

North American serial sequence
837073

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 · 21,366 decoded VINs at 100.0% prefix purity.

Model
579

Prefix basis · 21,366 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
2023

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 · Jan 3, 2024 – Apr 22, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Apr 22, 2026CAI · Full0GM FREIGHT INC 4461821YP67664/CA
Mar 21, 2026CAII · Walk-around0GM FREIGHT INC 4461821YP67664/CA
Dec 17, 2025WAIII · Driver-only5GM FREIGHT INC 4461821YP67664/CA
Sep 20, 2025ORII · Walk-around9MG ROADLINES INC 4267739YP67664/CA
Sep 8, 2025WAIII · Driver-only2GM ROADWAYS INC 3983182YP67664/CA
Aug 20, 2025ORII · Walk-around4OOSGM ROADWAYS INC 3983182YP67664/CA
Jul 29, 2025ORIII · Driver-only1OOSGM ROADWAYS INC 3983182YP67664/CA
Apr 10, 2025WAII · Walk-around1GM ROADWAYS INC 3983182YP67664/CA
Mar 13, 2025WAII · Walk-around2GM ROADWAYS INC 3983182YP67664/CA
Mar 11, 2025CAI · Full0GM ROADWAYS INC 3983182YP67664/CA
Nov 5, 2024ORII · Walk-around1W HAWK TRANSPORT INC 3013975YP67664/CA
Oct 30, 2024CAI · Full1W HAWK TRANSPORT INC 3013975YP67664/CA
Oct 25, 2024CAIII · Driver-only2OOSW HAWK TRANSPORT INC 3013975YP67664/CA
Oct 16, 2024ORIII · Driver-only1W HAWK TRANSPORT INC 3013975YP67664/CA
Oct 3, 2024WAIII · Driver-only0GM ROADWAYS INC 3983182YP67664/CA
Sep 20, 2024ORIII · Driver-only3GM ROADWAYS INC 3983182YP67664/CA
Sep 13, 2024ORII · Walk-around5OOSGM ROADWAYS INC 3983182YP67664/CA
Sep 5, 2024CAII · Walk-around0GM ROADWAYS INC 3983182YP67664/CA
Jun 19, 2024WAII · Walk-around2GM ROADWAYS INC 3983182YP67664/CA
May 31, 2024CAI · Full0GM ROADWAYS INC 3983182YP67664/CA
May 27, 2024CAII · Walk-around3OOSGM ROADWAYS INC 3983182YP67664/CA
Mar 29, 2024WAIII · Driver-only0GM ROADWAYS INC 3983182YP67664/CA
Jan 3, 2024WAIII · Driver-only2GM ROADWAYS INC 3983182YP67664/CA
03

Carriers this unit has run under

4 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
GM FREIGHT INC4461821Dec 17, 2025Apr 22, 20263IN
MG ROADLINES INC4267739Sep 20, 2025Sep 20, 20251CA
GM ROADWAYS INC3983182Jan 3, 2024Sep 8, 202515TX
W HAWK TRANSPORT INC3013975Oct 16, 2024Nov 5, 20244CA
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.
YP67664CAGM FREIGHT INCDec 17, 2025Apr 22, 20263
YP67664CAMG ROADLINES INCSep 20, 2025Sep 20, 20251
YP67664CAGM ROADWAYS INCJan 3, 2024Sep 8, 202515
YP67664CAW HAWK TRANSPORT INCOct 16, 2024Nov 5, 20244
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 14, 2026