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To change the expansion valve on a 1997 Pontiac Grand Am, first, ensure the AC system is fully discharged to avoid refrigerant exposure. Remove the dashboard or access panel to reach the expansion valve, typically located near the evaporator core. Disconnect the refrigerant lines and electrical connections from the old valve, then install the new valve in reverse order, ensuring all seals are secure. Finally, recharge the AC system and check for proper operation.

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2w ago

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