1995 GMC Yukon Owner's Manual - Page 434

Maintenance Schedule I - Diesel Engines 17,500 Miles (28 000 km) E l Change engine oil and filter (or every 3 months, whichever occurs first). An E ~ ~ i s s i o u Control Sorvic*e. 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 (-1 2" C), or higher. 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 12 months, whichever occurs first). 0 Lubricate the front suspension, king pin bushings, steering linkage, 20,000 Miles ( 2 000 km) 3 0 Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Corztrol Sur-rke. 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 (-1 2" C), or higher. 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 12 months, whichever occurs first). 0 Inspect shields and underhood insulation for damage or looseness. Adjust or replace as required. This is a Noise Emission Control Service. Applicable onlyto vehicles soldin the United States. 7-66