1996 Chevrolet Astro Owner's Manual - Page 311

I Maintenance ScheduleII 100,000 Miles (166 000 km) Change automatic transmission fluid filter if the vehicle is mainly and driven under one or more of these conditions: - I In heavy city traffic where the outside temperatureregularly 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. I f you do not use your vehicle under anyo these conditions, the fluid f and filter donot require changing. DATE ACTUAL MILEAGE SERVICED BY: Part 9: vwner Checks and Services Listed below are owner checks and services which should be performed at the intervals specifiedto help ensure thesafety, dependability and emission control performanceof your vehicle. Be sure any necessary repairs arecompleted at once. Wheneverany fluids or lubricants areadded to your vehicle, make sure they are the proper ones, as shown in Part D. At Each Fuel Fill It is important for you or a service station attendant to pegorm these underhood checksat each fuel fill. Engine Oil Level Check the engine oil level add the proper oil if necessary. See "Engine and Oil" in the Index for further details. 7-35