1995 GMC Yukon Owner's Manual - Page 459

I Maintenance Schedule II - Diesel Engines 0 0 For 2-Wheel Drive \lehicles only: Clean and repack the front wheel rs bearings (or a t each brake relining, whichever o c c ~ ~first). 0 Check the crankcase depression regulator valve system for any worn. plugged or collapsed hoses. See service manl~al. E I I I ~ , S ,CoutrolI An S~O~ Scr17icc2. Replace fuel filter. Replace filter sooner if it is clogged.*{Check the EGR System (ifequipped) (exceptCode F engine) a s described in the service manual. AI? Ewis.sior1 Cotrtrol Scrvic.c>. Inspect accessory drive (serpentine) belt for cracks. fraying and wear and check belt for proper tension. Adjust 01- replace belt as needed. AI? Emission Corz~ol Se1-vic*c. 0 Inspect shields and underhood insulation for damage or looseness. Adjust or replace a s required. This is a Noise Emission Control Service. Applicable only to vehicles sold in the United States. 0 Check the air intake system installation t o assure that gaskets are properly sealed and that all hose connections, fasteners and other components are tight. Also check t o be sure that the air cleaner housing is properly seated, the cover fits tightly and the wing nuts are tight. Tighten connections and fasteners or replace damaged parts as necessary. This is a Noise Emission Control Service. Applicable only to vehicles soldin the United States. 0 If your engine has a thermostatically controlled cooling fan, inspect all hoses and ducts for proper hook-up (or every 12 months, whichever occurs first). Be s ~ r the valve works properly. This is a Noise e Emission Control Service. Applicable only to vehicles sold in the United States. Check the exhaust pressure regulator valve for proper operation; correct any binding. Inspect hoses for cracks. chafing or decay. Replace parts a s needed. Arl Emissiotz Corrtrnl Sorviw. Check readfront axle fluid level and add fluid a s needed. Check constant velocity joints and axle seals for leaking. 'l:x: DATE ACTUAL MILEAGE SERVICED BY: 7-9 1