_Can not get my 2005 cts to shift into any gear. It is a 6 speed manual transmission and 3.6L. I was driving and came to a stop and noticed that my car would not shift into any gear. It seems like the transmission is stuck in 5th gear and will not relase. Could this be a clucth problem or a transmission i have 71000 miles on the car.

SOURCE: I have a 2005 cadillac cts with 90,000 miles and

Have the transmission fluid changed/new filter and use a premium synthetic fluid instead of cheap ol generic fluid. Think mobil1 full synthetic for the tranny. If it's never been changed this will make a dramatic difference.

Dennis Mulford

• 1055 Answers
• Posted on Aug 22, 2009

SOURCE: 2001 buick regal 71000 miles (transmission)

change the tranny fluid and filter

SOURCE: Can't shift into reverse ( manual transmission )

I have the same problem on my 2005 cts. The shifter fork has two rubber bushings that attach at the transmission that break or give way. I assume they did this for a softer feel and to avoid vibration but it leads to the selector not engaging well when you go the extreme direction of reverse on the shifter as there is too much deflection. I replaced the bushings with washers as spacers and it seems to work as a "McGyver" fix. I do intend to get the parts needed from Cadillac to restore it to factory standards. Hopefully they have the parts. To fix the problem you have to go under the car. To get good access you have to disconnect the exhaust and the driveshaft. I did it without this and just tormented my poor hands but I wasn't willing to do all the other work while in my driveway. You simply take the clip holding the fork shaft onto the transmission selector end off and slide the small shaft out. I also took off the shifter side of the fork to study the thing a bit better. That takes a 13mm and a small allen wrench, 4.5 or 3/16, can't remember. Then replace the bushings or do as I did and stack some washers so as to get rid of the slack between the inside of the fork and the gear selector on the transmission. Assemble and try. If you have as good dexterity and tenacity at your fingertips as I do, you'll curse the day you attempted doing this without taking out all the other stuff. If you don't, take out all the other stuff to make room for your hands. The space is very confined. Good luck.

SOURCE: When do I have my transmission oil changed on my

If it has never been changed, I would recommend you get it done now, if you take it to a service shop, nothing has to be removed, the oil changer plugs right into the transmission lines. on the 3rd year, I recommend the ****** filter changed along with fluid.