Factory build sheet

1999 Buick Century Custom

Build 2G4WS52M-X · 3.1L 6cyl · Sedan

VIN positions 1 through 8 read 2G4WS52M and position 10 reads X. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.

Every Century whose VIN starts 2G4WS52M and carries X in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 1 of them.

  • Decoded Jul 7, 2026
  • 1 known VINs

Factory specification

As filed by Buick with NHTSA for this build. Fields the filing does not record are left out entirely — a missing row means no recorded value, not a missing feature.

Engine

Displacement
3.1 L
Cylinders
6
Configuration
V-Shaped
Engine manufacturer
FLT
Fuel type
Gasoline

Body & chassis

Body class
Sedan/Saloon
NHTSA body type
PASSENGER CAR
Doors
4
Manufacturer
GENERAL MOTORS LLC

Weight rating

GVWR class
Class 1
GVWR
6,000 lb or less

Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.

The same build, other model years

Buick used the VIN pattern 2G4WS52M for 3 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.

How this VIN pattern is read

A 17-character VIN carries two kinds of information: what was built, and which one it is. This page is the first kind — the nine highlighted positions.

Positions Characters What they encode
1–3 2G4 GENERAL MOTORS LLC · World manufacturer identifier
4–8 WS52M Model, body style, engine and restraint system
9 × Check digit — computed per vehicle, not part of the build
10 X Model year — 1999
11 × Assembly plant
12–17 ×××××× Production sequence number, unique to each vehicle

1 vehicles carry this build

Every VIN we have decoded to 2G4WS52M-X shares the specification above.

  • 1 Known VINs

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Where this data comes from

Specification fields are decoded from the manufacturer's filings in the NHTSA vPIC database, keyed on VIN positions 1–8 and 10. We publish the filed values as they stand and leave out anything the filing does not record.

Vehicle counts come from the 1 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.