Coolant

ENGINE COOLANT
A 50/50 mixture of clean water (preferably distilled) and use only GM Goodwrench DEX-COOL or Havoline DEX-COOL (orange-colored, silicate-free) coolant, or an approved recycled coolant conforming to GM Specification 6038-M (GM P/N 1052103).

CAUTION: If silicate coolant is added to the cooling system, premature engine, heater core or radiator corrosion may result. In addition, the coolant will require change SOONER, at 50 000 km (30,000 miles) or 24 months.