Incorrect air flow from dash vents due to damaged engine vacuum hose on Buick Regal

Air flow from the dash vents may be incorrect due to a damaged engine vacuum hose near the battery tray.
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Average mileage: 82,475 (12,700–152,250)
7 model years affected: 1990, 1991, 1992, 1993, more1994, 1998, 2000
8 people reported this problem
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problem details
1998 Buick Regal 152,250 mi,
Car would not change venting from heater to vent to defrost. Found damaged vacuum line near battery tray.