1994 GMC Jimmy Owner's Manual - Page 313

Explanation Of Scheduled Maintenance Services Below are explanations of the services listed in the maintenance charts. The proper fluids and lubricants to use are listed in this section. Make sure whoever services your vehicle uses these. All parts should be replaced and all necessary repairsdone before you or anyone else drives the vehicle. 1. ENGINE OIL AND OIL FILTER CHANGE* ALWAYS USE API SERVICE SH OR SG ENERGY CONSERVINGI1 OILS OF THE PROPER VISCOSITY.The "SH' or "SG" designation may be shown alone or incombination with others, such as "SWCD", or "SH, SG, CD," or "SGKD", etc. To determine the preferred viscosity oil for your vehicle's engine (e.g. SAE 5W-30), see "Engine Oil" in the Index. 2. CHASSIS LUBRICATION- Lubricate thefront suspension, ball joint, steering linkage, and transfer case shift linkage, parking brake cable guides, propshaft splines, universal joints, brake pedal springs, and clutch pedal springs at the intervals specified onproper the maintenance schedule, or at everyengine oil change, whichever comes first. Ball joints should not be lubricated unless their temperature is 10°F (-12°C) or higher. When the weather is cold, let them warm before up lubricating themor they could bedamaged. Also, be sure to check all the vehicle fluid levels at this time. 3. COOLING SYSTEM SERVICE*- Drain, flush and refill the system with new or approved recycled coolantconforming to "GM Specification 6038-M". See "Engine Coolant" in the Index for the proper coolant andmixture to use in your vehicle. Also inspect the hosesand replace themif they are cracked, swollen, or deteriorated. Clean the outside the radiator andair conditioning of condenser. Wash the radiator neck.To ensure proper operation, pressure test the radiator and cap. 4. AIR CLEANER FILTER REPLACEMENT* Replace at - specified intervals. Ask your dealer the properreplacement for intervals for your driving conditions. 5 . FRONT WHEEL BEARING REPACK (%WHEEL DRIVE front wheel bearings at each brake ONLY) - Clean and repack the relining, or at the specified interval, whichever comes first. *An Emission Control Service 7-7