Cooling System Bleeding: Notes
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Suburban, and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
When adding coolant, use DEX-COOL® coolant. If silicated coolant is added to system, premature engine, heater core or radiator corrosion may result. In addition, engine coolant will require change sooner, at 30,000 miles or 24 months.