GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Pontiac
🢒
2004
🢒
Bonneville
🢒
Engine
🢒
Engine Cooling
🢒 Flushing
Important:
Do NOT add any engine coolant supplement sealant pellets to the cooling system.
Park the vehicle on a level surface.
Remove and clean (flush) the coolant recovery reservoir. Refer to
Coolant Recovery Reservoir Replacement
.
Flush the engine cooling system. Follow the flushing equipment manufacturer's instructions.
Install the coolant recovery reservoir. Refer to
Coolant Recovery Reservoir Replacement
.
Fill the cooling system. Refer to
Cooling System Draining and Filling
.