1997 GMC Suburban Owner's Manual - Page 369

I Short TripKity Maintenance Schedule -- Gasoline Engines I Replace fuelfilter. An Emission Control Service. (See footnote?.) 0Vehicles With GVWR Above 8,500 lbs. Only: Inspect shields and underhood insulation for damage looseness. Adjust or or replace as required. This is a Noise Emission Control Service. Applicable only to vehiclessold in the United States. 30,000 Miles (50000 km) 0Change engineoil and filter (or every 3 months, whichever occurs first). An Emission Control Service. LI Lubricate chassis components(or every 3 months, whichever occurs first). (See footnote#.) 0Check readfront axle fluid level add and fluid as needed. Check constantvelocity joints and axle seals for leaking. (See footnote* * .) 0For Two-Wheel-Drive vehicles only: Clean and repack the frontwheel bearings (or at each brake relining, whichever occurs first). 0Rotate tires. See "Tire Inspection and Rotation" in theIndex for proper rotation pattern and additional information. (See footnote+.) I DATE I ACTUAL MILEAGE ISERVICED BYJ 7-13