1995 GMC Yukon Owner's Manual - Page 420

Maintenance ScheduleI - Gasoline Engines Heavy Duty Emissions (Continued) Inspect fuel tank, lines, rails, injection assembly, cap and cap gasket. An Emission Control Service. ?Fuel filter replacement is required. not I 0 Inspect accessory drive (serpentine) belt for cracks, fraying wear and and checkbelt for proper tension. Adjust or replace belt as needed. An Emission Control Service. I 0 Inspect shields and underhood insulation for damage or looseness. This Adjust or replace as required. is a Noise Emission Control Service. Applicable only vehicles sold in the UnitedStates. to 0 If your engine hasa thermostatically controlled cooling fan, inspect all hoses and ducts for proper hook-up (or every 12 months, whichever occurs first).Be sure the valve works properly. This is a Noise Emission Control Service. Applicable only to vehicles sold the in United States. 7-52