1994 Pontiac Bonneville Owner's Manual - Page 255

Maintenance Schedule Explanation of Scheduled Maintenance Services Following are explanations of the services listed in Schedule I and Schedule 11. The proper fluids and lubricants to use are listed in Section D. Make sure whoever services your vehicle uses these. All parts should be replaced and all necessary repairs done before you or anyone else drives the vehicle. 4. Engine Accessory Drive Belt(s) Inspection* -- Inspect the belt(s) for cracks, fraying, wear and proper tension. in Replace as needed. (Belts can have many small cracks individual ribs without affecting performance.) 5. Cooling System Service* -- Drain, flush and refill the system with new or approved recycled coolant conforming to GM Specification 1825M. Keep coolant at the proper mixture as specified. See "Coolant" in the Index. This provides proper freeze and boil protection, corrosion inhibitor level and maintains proper engine operating temperature. Inspect hoses and replaceif they are cracked, swollen or deteriorated. Tighten screw-type hose clamps. Clean the outside of the radiator and air conditioning condenser. Wash the pressure cap and neck. 1 . Engine Oil and Filter Change* -- Always use SH or SG Energy Conserving I1 oils of proper viscosity. The "SH" or "SG" designation may be shown alone or in combination with others, such as "SH/CD," or "SH, SG, CD," "SG/CD," etc. To determine the preferred viscosity for your vehicle's engine (e.g., SAE 5W-30 or SAE 10W-30), see "Engine Oil" in the Index. 2. Chassis Lubrication -- Lubricate suspension and steering linkage. Lubricate the transaxle shift linkage, and parking brake cable guides, underbody contact points and linkage. To help ensure proper operation, we recommend a pressure test of both the cooling system and the pressure cap. 3. Tire and Wheel Rotation and Inspection -- For proper wear and maximum tire life, rotate your tires following the instructions in this manual. See "Tires, Inspection & Rotation" in the Index. Check the tires for uneven wear or damage. If you see irregular or premature wear, check the wheel alignment. Check for damaged wheels also.