1998 Pontiac Grand Am Owner's Manual - Page 330
1998 Pontiac Grand Am Manual
Page 330 highlights
I Long Trip/Highway Maintenance Schedule I 0 Change automatic transaxle fluid and filter if the vehicle is mainly driven under one or more these conditions: of - In heavy city traffic where the outside temperature regularly reaches 90°F (32°C) or higher. - In hilly or mountainous terrain. - When doing frequent trailer towing. - Uses such as found in taxi, police delivery service. or I you do not useyour vehicle under anyof these conditions, the fluid and f filter do not require changing. Manual transaxle fluid doesn't require change. 150,000 Miles (240 000 km) Cl Drain, flush and refill cooling system (or every 60 months since last service, MILEAGE See for whichever occurs first). "Engine Coolant" in the Index what to use. Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test the cooling system and pressure cap. An Emission ControlService. 7-29