1993 Pontiac Grand Am Owner's Manual - Page 270

ITEM NO. SERVICE 5 ITEM NO. SERVICE 6 7 Engine AccessoryDriveBeltInspection*Inspect the belt. for cracks, fraying, wear and proper tension. Replaceas needed. CoolingSystemService*-Drain,flushandrefill the system with newor approved recycled coolant conforming to GM Specification 1825M. Keep coolant at the proper mixtureas specified. See the Index under Coolant. This provides proper freeze protection, corrosion inhibitor level and engine operating temperature. Inspect hoses and replace if they cracked, are swollen or deteriorated. Clean the outside the of ak surge t n and air conditioning condenser. To help ensure proper operation,we recommend a pressure test of both the cooling system and the surge tank pressure cap. Transaxle Service-For a manualtransaxle,fluid doesn't require changing. 8 9 For an automatic transaxle, change both the fluid and filter every 15,000 miles (25 OOO k r n ) if the vehicle is mainly driven under one more of these or conditions: In heavy city traffic where the outsidetemperature regularly reaches 90°F (32OC) or higher. In hilly or mountainous terrain. When doing frequent trailer towing.With some models, you shouldn't even tow a trailer. See the Index under Towing a Trailer. Uses such as found in taxi, policecar or delivery service. If you do not use your vehicle under any of these conditions, change both the fluid and filter every 100,000 miles (160 000 km). Spark PlugReplacement *-Replace spark plugs with the proper type. See the Index under Replacement Parts. Spark PlugWire Inspection (3300 V6 Code N engine)**-Inspect for burns, cracks or other damage. Check the boot fit at the coils and the at spark plugs, Replace wires as needed.