FixVault

Battery Usage

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2010 GMC Yukon XL, 2010 GMC Yukon, 2010 Chevrolet Tahoe, 2010 Chevrolet Suburban, and 2010 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
All Non-Hybrid engines
Cold Cranking Amperage (CCA) 600 A
Reserve Capacity Rating 115 Minutes
Hybrid (HP2) 
Cold Cranking Amperage (CCA) 730 A
Reserve Capacity Rating 115 Minutes