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What is your question?
The blower for heat only works when you turn it to 4 on the knob… how come?
What makes this problem better or worse?
Only work on 4
How long has your 2002 Pontiac Grand Prix had this problem?
More than a year
1 Reply
Hi - Dave here, contributing to RepairPal and providing expert advice since 2010. Sounds like a concern with the blower motor resistor. Check this first. https://repairpal.com/auto-repair-near-me Click the link to find some shops near you who can help out!