Pontiac 1997 Grand Am Owner's Manual page 333

150,000 Miles (240 000 km)
17
Drain, flush and refill cooling system (or
every 60 months since last service,
whichever occurs first). See "Engine
Coolant" in the Index for what to use.
Inspect hoses. Clean radiator, condenser,
pressure cap and neck. Pressure test the.
cooling system and pressure cap.
An Emission Control Service.
DATE
SERVICED B Y
ACTUAL MILEAGE
7-40