1995 GMC Sonoma Owner's Manual - Page 318

Maintenance ScheduleII 50,000 Miles (83 000 km) I 0 Change automatic transmission fluid and filter if the vehicle is mainly driven under one or more of these conditions: - In heavy city traffic where the outside temperature regularly reaches 90°F (32°C) or higher. When doing frequent trailer towing. Uses such as found in taxi, police or delivery service. - In hilly or mountainous terrain. - - I f you do not useyour vehicle under any f these conditions, the o Jluicl and filter do not require changing. Manual transmission fluid doesn't require change. DATE SERVICED MILEAGE ACTUAL BY: 52,500 Miles (87 500 km) Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. 0 Lubricate the front suspension,ball joints, steering linkage and transfer case shift linkage, parking brake cable guides, propshaft splines, universal joints, brake pedal springs, and clutch pedal springs (or every 12 months, whichever occurs first). 0 Check readfront axlefluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking.** 0 Rotate tires. See "Tire Inspection and Rotation'' in the Index for proper rotation pattern and additional information. 7-30