1995 GMC Yukon Owner's Manual - Page 405

Maintenance Schedule I - Gasoline Engines Heavy Duty Emissions (Corltir.luecl) 0 Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for lea king.:^:'^: DATE SERVICED MILEAGE ACTUAL BY: 12,000 Miles (20 000 km) 0 Change engine oil and filter (or every 3 months, whichever occlm first). A11 Emissiou Colltrol Servicv. 0 Lubricate the front suspension, king pin bushings, steering linkage, transmission shift linkage, transfer case shift linkage, parking brake cable guides, rear driveline center splines,front axle propshaft splines, brake pedal springs and clutch pedal springs. Ball joints and king pin bushings should not be lubricated unless their temperature is 10" F (-12" C), or higher. When weather is cold, let the ball joints and king pin bushings warm up bef'ore lubrication or they could be damaged. Perform each of the listed lubrication service items at this mileage interval (or every 12 months, whichever OCCLII-S first). 0 Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals forleaking.:l''l: For 2-Wheel Drive vehicles only: Clean and repack the front whee.1 bearings (or at each brake relining, whichever occurs first). 0 Inspect air cleaner filterif you are driving in dusty conditions. Replace filter if necessary. An Emission Control Ser\?ic.e. 0 Replace fuel filter. Replace filter sooner if it is clogged.'? Inspect accessory drive (serpentine)belt for cracks, frayingand wear and check belt for proper tension. Adjust or replace belt as needed. An Emission Control Service. 0 Inspect shields and underhood insulation for damage orlooseness. Adjust or replace as required. This is a Noise Emission Control Service. Applicable only to vehicles sold in the United States. (Continued) 7-37