what code #26 mean?

1992 BUICK REGAL
185,000 MILES
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JOE1953
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i scann the computer it have code #26
Jan 3, 2012 at 10:12 PM
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RASMATAZ
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DTC 26 problem with Quad Driver Module (QDM A) error
Jan 3, 2012 at 10:19 PM
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JOE1953
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where the Quad Driver module Located on a 1992 Buick Regal
Jan 4, 2012 at 8:55 PM
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