1993 Pontiac Trans Sport Owner's Manual - Page 288

ITEM NO. SERVICE 5 Engine Accessory DriveBelt InspectionInspect the drive belt for cracks, fraying, wear and proper tension. Replace as needed. Cooling System Service*-Drain, flush and refdl the system with newor approved recycled coolant conforming to GM Specification 1825M. Keep coolant at the proper mixture as specified. See the Index under Coolant. This provides proper freeze protection, corrosion inhibitor level and engine operating temperature. Inspect hoses and replace if they are cracked, swollen or deteriorated. Tighten screw-type hose clamps. Clean the outside of the radiator and air conditioning condenser. Wash thepressure cap and neck. To help ensure proper operation, we recommend a pressure testof both the cooling system and the pressure cap. Transaxle Service-Change both the fluid and filter every 15,000 miles(25 000 km) if the vehicle is mainly driven under one more of these or conditions: ITEM NO. SERVICE 6 8 9 In heavy city traffic wherethe outside temperature regularly reaches90°F (32°C) or higher. In hilly or mountainous terrain. When doing frequent trailer towing. Uses such as found in taxi, police or delivery car service. If you do not use your vehicle under any of these conditions, change both the fluid and fdter every 100,000 miles (160 000 km). Spark Plug Replacement*-Replacesparkplugs with the proper type. See the d a under I Replacement Parts. Spark Plug Wire Inspection*-Inspectforburns, cracks or other damage. Check the boot fit at the distributor or coils and at the spark plugs. Replace wires as needed. 7 287