1996 GMC Safari Owner's Manual - Page 332

Long Trip/Highway Maintenance Schedule I In hilly or mountainous terrain. When doing frequent trailer towing. Uses such as found in taxi, police or delivery service. 30,000 Miles (50 000 km) 0Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. - 0Lubricate chassis components; see footnote # (or every 12 months, whichever occurs first). 0Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. ** 0For Two-Wheel-Drive vehicles only: Clean and repack the front wheel bearings (or at each brake relining, whichever occurs first). 0Change 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. 7-32 - I f y o ~ c/o not use your vehicle under arzy o t f these c-onditions, c-hnngethe fluid mclfilter evety 30,000 rrIiles (50 000 km). 0Replace fuel filter. AI?En?is.sior.~ Contl-ol Service. An Emission Control Service. -f 0Replace air cleaner filter.