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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 05:48 PM.
Reason: need to add more info
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