Initial Inspection and Diagnostic Overview

Regular maintenance of the cooling system will help keep it operating properly. Use the following procedures to check the cooling system at least once a year or 25000 km (15,000 miles).

Long Life Engine Coolant
DEX - COOL engine coolant is a long life engine coolant and is ethylene glycol based, silicate-free and orange in color. DEX - COOL coolant provides longer lasting protection against rust and corrosion, and also increases water pump seal life. It also gives freezing protection down to -34° (-37°C) and gives boiling protection up to 265°F (129°C), and meets GM Specification 6277M.