1996 GMC Sonoma Owner's Manual - Page 323

1 Short TripKity Maintenance Schedule Change automatictransmission 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 O 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 If you do not use y o ~ vehicle ltnder crny o ~r f these conditions,tlze%fluid and.filter du not require changing. Manual transmission fluid doesn't require change. 0Inspect Positive CrankcaseVentilation (PCV) valve. An Emission Control Service. I DATE I ACTUAL MILEAGE ISERVICED BYI 7-31