Fluid · Coolant
Coolant
for 2026 Chevrolet Tahoe 3.0L I6 Duramax · RWD
Fluid Type
Dex-Cool 50/50 orange
Spec: GM 6277M
Capacity
16.5qt
15.61 L
Drain & Refill
14 qt
13.24 L
Change Interval
150,000 mi
241,350 km
Data quality
Calibrated
Platform-calibrated book-style value. Verification program ongoing.
Notes
Diesel cooling system; first change 150K, then every 5 years/150K
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