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91 Buick Park Av quad driver no 1st or overdrive after battery change


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Posted

i changed the battery in my 1991 buick park avenue yesterday and ever since than my check engine light has come on and the code is quad driver failure, also i have lost first gear and overdrive. i would really appriciate any info anyone has to offer because i have to work tomorrow and have no idea how i am getting there. i have reset the computer multiple times and checked every fuse under the hood and dash

Posted
the code is quad driver failure

Time for a different computer. Of course, you'll want to follow the diagnostic procedure for that trouble code; but you can pretty much expect to need a replacement ECM.

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