1998 GMC Suburban Owner's Manual - Page 375

I Short TriplCity Maintenance Schedule -- Gasoline Engines I 0 For Two-Wheel-Drive vehicles only: Clean and repack the front wheel bearings (or at each brake relining, whichever occurs first). 0 Vehicles With GVWR Above 8,500 Ibs. Only: Inspect shields and underhood insulation for damage or looseness. Adjust or replace as required. This is LI Noise EIllissiorr Control Service. Applicnl~le to vohic*les only sold iu the Ujlited States. 18,000 Miles (30 000 km) 0 Change engine oil and filter (or every 3 months, whichever occurs first). A n Emissior1, Colltrol Senlice. Lubricate chassis components (orevery 3 months, whichever occurs first). (See footnote #.> 0 Check readfront axle fluid level and add fluid as needed. Check constant velocity .joints and axle seals for leaking. (See footnote '!:'I:.) 0 Rotate tires. See "Tire Inspection and Rotation" i n the Index for proper rotation pattern and additional information. (See footnote +.) I DATE MILEAGE I 21,000 Miles (35 000 km) 0 Change engine oil and filter (or every 3 months, whichever occurs first). An Emission CoI;2trd Servicr. DATE ACTUAL MILEAGE 1 SERVICED B Y (Continued) 7-11