Pontiac 1993 Grand Am Owner's Manual page 263

Maintenance Schedule
Section A: Scheduled Maintenance Services
Using Your Maintenance Schedules
This section tells you the maintenance services you should
have done and when you should schedule them. Your
Pontiac dealer knows your vehicle best and wants you to be
happy with it. If you go to your dealer for your service
needs, you'll know that GM-trained and supported service
people will perform the work using genuine GM parts.
These schedules are for vehicles that:
carry passengers anti cargo within recommended limits.
You will find these limits on your vehicle's Tire-Loading
Information label. See the Index under Loading Your
Elzicle.
limits.
Fuel.
are driven on reasonable road surfaces within legal driving
use the recommended unleaded fuel. See the Index under
Selecting the Right Schedule
First you'll need to decide which of the two Schedules is
right for your vehicle. Here is how to decide which schedule
to follow: