GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13690468) - 2021 - CRC - 2/18/20
Service and Maintenance
387
Maintenance Schedule Additional
Required Services - Normal
12
000
km/7,500
mi
24
000
km/15,000
mi
36
000
km/22,500
mi
48
000
km/30,000
mi
60
000
km/37,500
mi
72
000
km/45,000
mi
84
000
km/52,500
mi
96
000
km/60,000
mi
108
000
km/67,500
mi
120
000
km/75,000
mi
132
000
km/82,500
mi
144
000
km/90,000
mi
156
000
km/97,500
mi
168
000
km/105,000
mi
180
000
km/112,500
mi
192
000
km/120,000
mi
204
000
km/127,500
mi
216
000
km/135,000
mi
228
000
km/142,500
mi
240
000
km/150,000
mi
Rotate tires and perform Required Services. Check engine oil
level and oil life percentage. Change engine oil and filter,
if needed. Check engine air filter life percentage and status.
Change engine air filter, if needed.
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Replace passenger compartment air filter. (1)
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Inspect evaporative control system. (2)
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If the vehicle is not equipped with the engine air filter life
system, replace engine air cleaner filter. (3)
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Change transfer case fluid, if equipped with 4WD. (4)
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Replace spark plugs. Inspect spark plug wires and/or boots.
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Drain and fill engine cooling system. (5)
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Visually inspect accessory drive belts. (6)
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Replace brake fluid. (7)
Replace front and rear wiper blades. (8)
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Replace hood and/or body lift support gas struts. (9)
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Replace air conditioning desiccant. (10)