My 98 Bonneville blows out heat but all of a sudden it will start blowing out cool air

What is your question?

Randomly switching from hot air to cool air

What makes this problem better or worse?

Just switch from hot and cool air for no reason

How long has your 1998 Pontiac Bonneville had this problem?

Year

Visitor

in Mountain View CA

Sep 16, 2019

Popular Answer

What are the best Pontiac repair shops?

RepairPal Certified shops can diagnose and repair your 1998 Pontiac Bonneville. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

Popular Answer

My 98 Bonneville blows out heat but all of a sudden it will start blowing out cool air

What is your question?

Randomly switching from hot air to cool air

What makes this problem better or worse?

Just switch from hot and cool air for no reason

How long has your 1998 Pontiac Bonneville had this problem?

Year

Visitor

in Mountain View CA

Sep 16, 2019

1 Reply

Popular Answer

pushrodon Sep 16, 2019

Low coolant level - - Malfunctioning thermostat - - Heater controls malfunction. **Hands-on** testing is required.

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Popular Answer

What are the best Pontiac repair shops?

RepairPal Certified shops can diagnose and repair your 1998 Pontiac Bonneville. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.