tranny problems

I drive a 95 buick century 3.1 vr with the 4 speed tranny and it keeps jumping from 1 straight to overdrive and does not down shift when I come to a slow is it my shifting selonoid or the trany all together I hate to get rid of this car it has 170,000 miles and the motor runs like new any help?

When was the last transmission service. ATF replacement and screen filter?

about 1 month/40miles ago and it actually made it worse I had bought the car with 160,000 miles and the guy who sold it to me said he had done it before he put it on the market

I had a tranny problem in New Orleans once. It was a Sunday morning, and I was headed down to Court of Two Sisters for breakfast, when this "girl" in a dress and heels stopped in front of me to ask something. When "she" turned around and I noticed that "she" forgot to shave that morning, I just kept walking. It was pretty uncomfortable having to act like I didn't notice or hear "her" when we were the only two people on the street.

OH! You meant your transmission? Since the car is a '95, you may have the hybrid OBD 1½ PCM. That will require a bidirectional scanner to check for transmission trouble codes, which might be a hint as to the problem. You can also verify the fluid level, check the vacuum supply to the pressure modulator (the 1995 4T60E still has a vacuum modulator), and check the electrical connector on the transmission.

Out of curiosity, does the speedometer indicate correctly? Does the cruise control operate correctly? Can you manually shift through the ranges from "1" to "OD" with normal results? Will the car move from a stop when in "2" and when in reverse?

I had a tranny problem in New Orleans once. It was a Sunday morning, and I was headed down to Court of Two Sisters for breakfast, when this "girl" in a dress and heels stopped in front of me to ask something. When "she" turned around and I noticed that "she" forgot to shave that morning, I just kept walking. It was pretty uncomfortable having to act like I didn't notice or hear "her" when we were the only two people on the street.

OH! You meant your transmission? Since the car is a '95, you may have the hybrid OBD 1½ PCM. That will require a bidirectional scanner to check for transmission trouble codes, which might be a hint as to the problem. You can also verify the fluid level, check the vacuum supply to the pressure modulator (the 1995 4T60E still has a vacuum modulator), and check the electrical connector on the transmission.

Out of curiosity, does the speedometer indicate correctly? Does the cruise control operate correctly? Can you manually shift through the ranges from "1" to "OD" with normal results? Will the car move from a stop when in "2" and when in reverse?

lmao the speedometer works great cc works to when I manually shift it still stutters it takes of smooth in 2nd and reverse just started giving me problems I had checked all of the electrical connections to

any body have any ideas I had it scanned it came back clean? AHHHH Im thinkin bout just junkin it

Check vss circuit for shorts or broken wire espcially grnd. as this could cause problem.