Oldsmobile 1999 Alero - Manual (Page 276)

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Vehicle Identification Number (VIN)
This is the legal identifier for your vehicle. It appears on
a plate in the front corner of the instrument panel, on the
driver’s side. You can see it if you look through the
windshield from outside your vehicle. The VIN also
appears on the Vehicle Certification and Service Parts
labels and the certificates of title and registration.
Engine Identification
The 8th character in your VIN is the engine code. This
code will help you identify your engine, specifications
and replacement parts.
Service Parts Identification Label
You’ll find this label on the bottom of your spare tire
cover. It’s very helpful if you ever need to order parts.
On this label is:
D your VIN,
D the model designation,
D paint information and
D a list of all production options and
special equipment.
Be sure that this label is not removed from the vehicle.