CHEVROLET 2011 Tahoe - Manual (Page 90)

Black plate (2,1) Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2011
11-2 Service and Maintenance
Usage Fluid/Lubricant
Drive Motor/Generator Control
Module (DMCM) Cooling System
Always use the pre-mixed 50/50 mixture of de‐ionized water and
DEX-COOL
® (silicate-free) coolant available at your dealer. See Drive
Motor/Generator Control Module (DMCM) Cooling System on page 10‑9.