1996 GMC Savana Van Owner's Manual - Page 325

1 Short Trip/City Maintenance Schedule -- Gasoline Engines I - 100,000 Miles (166 000 km) 0Drain, flush and refill cooling system (or every 60 months since last service whichever occurs first). See "Engine Coolant" in the Index for what to use. Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test cooling system and pressure cap. AI1 In heavy city traffic where the outside temperature regularly reaches 90"F Emission Control Service. (32°C) or higher. - In hilly or mountainous terrain. - When doing frequent trailer towing. - Uses such as found in taxi, police or delivery service. do m t use y x . t r vehicle lmder- any of thew conditio~~s, flL.ricimd,filt6>r not the do require dhnging. If y x t 0Inspect spark plug wires. An Ernission Control Service. 0Replace spark plugs. An Emission Colztrol Service. 0Inspect Positive Crankcase Ventilation 0Change automatic transmission fluid and filter if the vehicle's GVWR is over 8600 lbs. or if the vehicle is mainly driven under one or more of these conditions: (Pcv)valve. An Emission Cor~trolService. ACTUAL MILEAGE DATE SERVICED B Y 7-29