Cadillac Seville / Cadillac Eldorado Forum Discussion, 94' SLS Transmission Problem in Past Cadillac Vehicle Discussion; Got my first Cadillac, what a proud owner! Any Rate: overdrive wasnt engaging or slipping. but not a normal slip. ...
Got my first Cadillac, what a proud owner! Any Rate: overdrive wasnt engaging or slipping. but not a normal slip. after shifting to second and then 3rd it seemed at 40-45 mph that it would not go into od, kinda of just shutdown the transmission. Pull up to a light shut the car off and then it resets until after 45 shifting into OD. So, I just finish replacing the transmission, Same thing. Replaced the Central Command Center, (Replaced VSS Vehical Speed senor, Strange - IF unplugged Transmission works fine all speeds, but then you mess up the fuel burn ratio and that causes gas flooding). (Everything replaced) 12v to trans. (SAME PROBLEM) Is there a relay for the Transmission? Auto parts say no.
Automobile(s): White Diamond '03 DHS (with DTS floor shift)
Re: 94' SLS Seville Transmission Problem
First think you should do is learn how to use the on board diagnostics. Read the DTC sticky at the top of the forum page. The come back and post any codes you have AND their definitions. Your code definitions will be in the OBDI link.
Also '94 has the option to override the shift points so you can shift the transmission whenever you want using the fan speed UP/DOWN buttons.
That's how you test first, then you go nuts replacing transmission and such.