95 TRANSIMISSION ISSUE

1995 Cadillac SLS

Tiny

COntra

December, 3, 2010 AT 6:32 PM

We a 1995 Cadillac SLS w/ Northstar Engine. Weare having a transmission issue. We have had the shift solenoid replaced, filters etc. It still does not want to change gears. Manually it will change from 3rd, 2nd then to Drive but it will get go to overdrive? Please help!

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3 Answers

Tiny

factoryjack

December, 4, 2010 AT 7:32 AM

You had only one shift solenoid replaced, there are two. Your description of the symptom, is it just no fourth gear? Does it reach a point that all you get is engine speed increase, and no power like slipping? When you let off the throttle at cruise, does it coast or the engine drops to an idle, and applying the throttle is void until you reach the point the the car accelerates? Is there a check engine light on?

Tiny

COntra

December, 4, 2010 AT 6:31 PM

This is exactly how the car is performing. We were told that the the 2nd sloenoid did not have to be replaced, being that is was in good condition. The check engine light is on. They said the code coming out was for the, heat temperature control sensor. They tell the computer to turn on cooling fans. If we replace the 2nd solenoid, will this take car of this problem?

Tiny

factoryjack

December, 5, 2010 AT 12:07 AM

Can't guarantee at this point, if the second solenoid is at fault. It would take knowing which of the two(A or B) was replaced. On the early models of 4T80E, the filter in between the solenoids would push out and eventually break one of the solenoids. A new solenoid kit would include two solenoids, and a bracket with longer bolt to prevent this from reoccurring. You can press off and warmer on your climate panel with the key on, it will display powertrain codes for you, as well as other modules codes if any. Record the powertrain codes and report back.

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