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Old 10-03-2016, 10:09 AM   #1
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I have 2002 pontiac bonneville and my transmission going out and i have a transmission out of 2000 buick regal laying around. I was wondering if it was compatible. they both have the same mounting points. it had the same motor i have already used it in my bonneville.
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Old 10-03-2016, 04:29 PM   #2
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They could have different final drive ratios. Solenoids might be different in them. Speed sensor could be different also. You'd be surprised as what might be different even between just a couple of years.

Do you have access to both RPO stickers(white sticker with a bunch of numbers on it in glove box)
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Old 10-03-2016, 05:29 PM   #3
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i do not have the regal anymore. anything on the transmission that might help?
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Old 10-03-2016, 05:36 PM   #4
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The data plate tag if its still intact.
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Old 10-04-2016, 07:44 PM   #5
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this is the only one i can find
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Old 10-04-2016, 08:21 PM   #6
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did a little research myself and i think the buick is a 3.05 and my bonneville is a 2.93
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Old 10-04-2016, 09:15 PM   #7
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Usually its the other way around. Bonneville'* tend to have the taller ratio for sporty accelerations. Hence the gramma car of Buicks.
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Old 10-04-2016, 09:47 PM   #8
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Old 10-04-2016, 09:54 PM   #9
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Old 10-04-2016, 10:05 PM   #10
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the first pic is by code and the second one by vin decode i am not sure if its 100% correct
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