1997 GMC Jimmy Owner's Manual - Page 360

I LongTripmighwayMaintenanceSchedule I I f you do not use your vehicle under any of these conditions, the fluid and filter do not require changing. 50,000 Miles (83 000 km) 0Change automatic transmission fluidand filter if the vehicle is mainly driven under one or moreof these conditions: - In heavy city traffic where the outside 90 temperature regularly reaches O F (32°C) orhigher. - In hilly or mountainous terrain. - When'doing frequent trailer towing. - Uses such as found in taxi, police or delivery service. Manual transmission fluid doesn't require change. DATE ACTUAL MILEAGE SERVICED BY 7-37