1995 GMC Yukon Owner's Manual - Page 392

Maintenance Schedule I - Gasoline Engines With Light Duty Emissions 50,000 Miles (83 000 km) 0 Change automatic transmission fluid and filter if the vehicle is mainly driven under one or more of these conditions: 0 In heavy city traffic where the outside temperature regularly reaches 90°F (32°C) or higher. In hilly or mountainous terrain. When doing frequent trailer towing. Uses such as found in taxi, police or delivery service. 0 0 0 I f you do not use your vehicle under a n y o these conditions, the f fluid andji'lter clo not require ch.anging. Manual transmission fluid doesn't require change. ACTUAL MILEAGE DATE SERVICED BY: 1 51,000 Miles (85 000 km) 0 Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 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, frontaxle 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 (-I 2" C), orhigher. When weather is cold, let the ball joints and king pin bushings warm up before lubrication or they could be damaged. Perform each of the listed lubrication service items at this mileage interval (or every 6 months, whichever occurs first). 0 Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking.** DATE MILEAGE BY: ACTUAL SERVICED 7-24