Fluid · Coolant
Coolant
for 2025 GMC Yukon 3.0L I6 Duramax Diesel · 4WD
Fluid Type
Dex-Cool 50/50 premix
Spec: GM DEX-COOL (OAT)
Capacity
19qt
17.97 L
Drain & Refill
17 qt
16.08 L
Change Interval
150,000 mi
241,350 km
Notes
Orange long-life coolant. Diesel engine has higher capacity. First change at 150k miles, then every 5 years or 150k miles thereafter.
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