1988 eldorado trans issues

1988 CADILLAC ELDORADO
98,000 MILES
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DUSTIN61118
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i just bought a 1988 eldorado it shifts in to gear just fine but when in drive it wont shift into 2nd or 3rd not even if u manually and reverse works just fine
Apr 30, 2013 at 12:14 AM
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HMAC300
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have a trans guy look at it, it can be a governor or a valve body problem or speed sensor
Apr 30, 2013 at 5:48 AM
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DUSTIN61118
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i have a guy helping me with the car but the data link connector isnt working do u have any ideas on that
Apr 30, 2013 at 12:25 PM
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HMAC300
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check fuses and then use a paer clip and cross A&B on the aldl watch light blink on dash with key on it will go in series of three 1 then 2 equalscode 12
Apr 30, 2013 at 12:32 PM