Buick Regal 2013 problems with transmission

Thanks for your answer... I actually had a big milkshake in my coolant tank. I took my car with an specialist and he told me that my radiator was broken causing this leak of liquids and obviously the milkshake. They changed several parts of the transmission such as pistons, etc. After that, they are now telling me that my speedometer is going crazy, caused by a broken transmission control module... Can this be truth? They are telling me that they replaced the speed sensor with no positive result and now they want to charge me a big amount of money for the transmission module What is your opinion? Thanks a lot ( YOu were right with the big budget )

I have a 2013 Buick Regal GS and when I go on navigation the red arrow keeps going in circles. Is there any way I can fix this?

My 2016 buick regal has been studdering and jerking as i drive i have replaced the plugs and coil packs and had an alignment done but it still does it now if i speed up when it starts jerking it goes away until i slow down and speed back up

I have a 2013 Buick Regal GS when I put it in drive do you have a hard kick what is the problem please help me.

I have a 2013 Buick Regal GS when I put it in Drive it has a hard kick what does that mean can somebody help me out

DID SOMEONE FIXED THERE CAR, I HAVE THE SAME PROBLEM