Equipment unit · VIN-decoded · NHTSA vPIC

1997 Peterbilt 379

1XP5DB8X6VD438379 · Truck-Tractor · TRUCK
Carriers run under2
36 mo
Inspections11
all-time
OOS inspections8
of 11
First seenJul 18, 2023
CA
Last seenJul 21, 2026
AL
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
1XP5DB8X6VD438379
Make
Peterbilt
Model
379
Model year
1997
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 19, 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
5DB8X

Deterministic · VIN positions 4–8.

Check digit
6 · valid

Deterministic · position 9; calculated value 6.

Model year candidates
1997 or 2027

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

North American serial sequence
438379

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 · 702 decoded VINs at 100.0% prefix purity.

Model
379

Prefix basis · 702 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
1997

Observed directly for this VIN via NHTSA vPIC.

Observed make
PETERBILT

Observed directly for this VIN via NHTSA vPIC.

Observed model
379

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 · Jul 18, 2023 – Jul 21, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Jul 21, 2026ALI · Full9OOSSOUTHERN PIPE & SUPPLY COMPANY INC 79183A558338/MS
Jul 21, 2026ALI · Full9OOSSOUTHERN PIPE & SUPPLY COMPANY INC 79183A558338/MS
Jul 31, 2025MTII · Walk-around2OOSDIXIE EXPRESS LLC 1644704A520560/MS
Nov 19, 2024MOII · Walk-around5OOSDIXIE EXPRESS LLC 1644704A520560/MS
Jul 18, 2024LAI · Full6OOSDIXIE EXPRESS LLC 1644704A520560/MS
Apr 20, 2024AZIII · Driver-only1DIXIE EXPRESS LLC 1644704A309447/MS
Nov 30, 2023WYII · Walk-around4DIXIE EXPRESS LLC 1644704A309447/MS
Nov 17, 2023NMII · Walk-around5OOSDIXIE EXPRESS LLC 1644704A309447/MS
Oct 24, 2023UTI · Full22OOSDIXIE EXPRESS LLC 1644704A309447/MS
Aug 16, 2023LAIII · Driver-only3OOSDIXIE EXPRESS LLC 1644704A309447/MS
Jul 18, 2023CAII · Walk-around0DIXIE EXPRESS LLC 1644704A309447/MS
03

Carriers this unit has run under

2 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SOUTHERN PIPE & SUPPLY COMPANY INC79183Jul 21, 2026Jul 21, 20262MS
DIXIE EXPRESS LLC1644704Jul 18, 2023Jul 31, 20259MS
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.
A558338MS1SOUTHERN PIPE & SUPPLY COMPANY INCJul 21, 2026Jul 21, 20262
A520560MSDIXIE EXPRESS LLCJul 18, 2024Jul 31, 20253
A309447MSDIXIE EXPRESS LLCJul 18, 2023Apr 20, 20246
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 19, 2026