Fluid · Coolant
Coolant
for 2026 GMC Yukon 3.0L I6 Duramax Diesel · 4WD
Fluid Type
Dex-Cool orange 50/50 premix
Spec: GM6277M
Capacity
18qt
17.03 L
Drain & Refill
16 qt
15.14 L
Change Interval
150,000 mi
241,350 km
Notes
Diesel engine has larger cooling system. First change at 150K miles, then every 5 years/150K
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