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Old 09-13-2019, 06:38 PM   #4
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Join Date: Sep 2019
Location: HICKSVILLE, New York
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Re: Computer Codes "QDM"? 95' Riv

Have 1995 Buick Park Ave. Ultra Check Engine light shows
Code P1640 QDM 1 Failure

Runs great no problems now Recently had Blower fan resistor replaced (blower fan was NOT working) Also replaced alternator, belt tensioner and belt for alternator Still have some belt noise Googled Buick codes It said "Driver 1 - Input High Voltage Any thoughts ? I would really like to fix check engine light issue

Last edited by Gregggg; 09-13-2019 at 06:48 PM. Reason: need to add more info
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