Equipment unit · VIN-decoded · NHTSA vPIC

2017 Peterbilt 579

1XPBDP9X7HD358978 · Truck-Tractor · TRUCK
Carriers run under3
34 mo
Inspections10
all-time
OOS inspections4
of 10
First seenSep 11, 2023
SC
Last seenJul 9, 2026
AL
Inspected under 3 different carriers in 34 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
1XPBDP9X7HD358978
Make
Peterbilt
Model
579
Model year
2017
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 23, 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
7 · valid

Deterministic · position 9; calculated value 7.

Model year candidates
1987 or 2017

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

North American serial sequence
358978

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
2017

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 · Sep 11, 2023 – Jul 9, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 9, 2026ALIII · Driver-only3CECILIA LEANN SIMS 1546468NOTAG/AL
May 28, 2026GAIII · Driver-only5OOSF AND M CONTRACTING COMPANY LLC 3966447C726FH/GA
May 18, 2026TNI · Full1OOSF AND M CONTRACTING COMPANY LLC 3966447C726FH/GA
Apr 16, 2026TNIII · Driver-only1F AND M CONTRACTING COMPANY LLC 3966447C726FH/GA
Oct 6, 2025GAII · Walk-around5OOSF AND M CONTRACTING COMPANY LLC 3966447TN022338/AL
Mar 15, 2025SCII · Walk-around2KAG ENERGY LLC 469756PWE6109/OH
Mar 13, 2025SCI · Full6OOSKAG ENERGY LLC 469756PWE6109/OH
Dec 6, 2023SCI · Full2KAG ENERGY LLC 469756PWE6109/OH
Sep 26, 2023NCII · Walk-around0KAG ENERGY LLC 469756PWE6109/OH
Sep 11, 2023SCII · Walk-around0KAG ENERGY LLC 469756PWE6109/OH
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
CECILIA LEANN SIMS1546468Jul 9, 2026Jul 9, 20261AL
F AND M CONTRACTING COMPANY LLC3966447Oct 6, 2025May 28, 20264GA
KAG ENERGY LLC469756Sep 11, 2023Mar 15, 20255OH
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.
NOTAGAL1CECILIA LEANN SIMSJul 9, 2026Jul 9, 20261
C726FHGAF AND M CONTRACTING COMPANY LLCApr 16, 2026May 28, 20263
TN022338ALF AND M CONTRACTING COMPANY LLCOct 6, 2025Oct 6, 20251
PWE6109OH1KAG ENERGY LLCSep 11, 2023Mar 15, 20255
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 23, 2026