S90 L6-2.9L VIN 96 B6304S (1998)
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Disconnect vacuum lines from firewall.
Remove:
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plate washer and foam rubber seal at firewall lead-through to firewall
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climate unit from firewall.
Inside car:
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Remove heater and defroster ducts.
(Do not remove duct through steering column mounting.)
Disconnect following leads from climate unit:
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positive terminal strip
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connector for ambient temperature sensor, blower motor, power stage and control module (if applicable).