1996 GMC Sonoma Owner's Manual - Page 311

51.000 Miles (85 000 km, El Change engineoil and filter (or every 3 months, whichever occurs first). A n Emission Control Service. 54,000 Miles (90 000 km) I7 Change engineoil and filter (or every 3 months, whichever occurs first). Arz Emission Control Service. 0Lubricate the front suspension,ball joints, steering linkageand transfer case shift linkage, parking brake cable guides, propshaft splines,universal joints, brake pedal springs and clutch pedal springs at every oil change (or every 3 months, whichever occurs first). 0Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals forleaking.*'* 0Lubricate the front suspension,ball joints, steering linkageand transfer case shift linkage, parking brake cable guides, propshaft splines, universal joints, brake pedal springs and clutch pedal springs at every oil change (or every 3 months, whichever occurs first). Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking.** (Continued) I ACTUAL MILEAGE I SERVICED B Y I 7-19