2000 Grand Am SE Tranny?

So hi, I have a 2000, automatic Grand Am SE with 161,000KM in her and everything seemed to be working fine but as I was driving it today my speedometer just stopped working and when I try to get her up to second gear she kind of jerks forward, if that makes sense? Also, today when I was driving she couldn't gear up at all, she just went from first to second to third to fourth gear without picking up any speed.

I'm not a car savvy person at all but I'm pretty sure it has something to do with the transmission?

Any help would be greatly appreciated! :shakehead

Is there any light on on the instrument cluster? like ABS or check engine soon? You could have a faulty ABS sensor, many cars use those sensors for the vehicle speed, which the ECU use to make it's gear decision... I do not know however if this is the case for your car.

I'm thinking VSS.....

it will shift normally even with a bad wheel speed sensor(s).
Sometimes it will also drive and shift with a bad VSS, just depends on how much the sensor is failing.

I would start by having the trans fluid level checked.
If that's good, get it scanned with a scan tool that can read trans codes. Other wise you are just guessing.

Also you might check your fuses for anything to do with the trans. :thumbsup: