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1994 Cadillac DeVille Concours 4.6L
Posted to GM Transmission on 4/17/2007 4 Replies

+Code po56 sets repeatedly. Trans never shifts wrong and always engages O.D. At times while watching data stream input shaft signal will drop out. Sometimes code po39 will also appear(TCC Engagement error). But trans always shifts fine and goes into O.D. Other...

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car Vehicle Data

1994 Cadillac DeVille Concours

VIN 1G6KF52YIR
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
Message Closed w/Summary

car Vehicle Data

1994 Cadillac DeVille Concours

VIN 1G6KF52YIR
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI