Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Engine Cooling System Inspection



ENGINE COOLING SYSTEM INSPECTION

NOTICE: When adding coolant, use DEX-COOL� coolant. If silicated coolant is added to the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner at 50,000 km (30,000 mi) or 24 months.

This vehicle was manufactured with GM Goodwrench DEX-COOL� orange colored, silicate free when coolant is added or when coolant is changed. Add 2 engine coolant supplement pellets, GM P/N 3634621 (Canadian P/N 10953473) or equivalent, when refilling the system.

- Drain, flush and refill cooling system every 150,000 miles or every 60 months since last service, whichever occurs first.

- Inspect the radiator, and heater hoses.

- Clean the radiator, condenser, pressure cap and neck. Pressure test the cooling system and pressure cap. This is an emission control service.