air keeps getting into coolant system what could cause this

Asked by Jun 26, 2015 at 05:20 AM about the 2000 Pontiac Montana Base

Question type: Maintenance & Repair

1 Answer

35,025

The air could be combustion gasses. Have it pressure tested and checked for combustion gasses in the coolant. It could have an issue with a head gasket or an external leak.

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