[Goodman]

My transmission been acting up lately maybe because of the long & cold winter we had...

I am pretty sure my transmission is still ok but i could be wrong?
My transmission is working just fine since spring is here & since we got warmer temperature , although sometime when the engine is cold the transmission will take a long time to switch to second gear & goes up to about 4000rpm while to car move real slow but if a give a little gas the car move faster so it doesn't seems to be slipping

I wanted to save money as much as i can so i first want to check the oil level , if that is ok then i'll go & change the oil + filter but if it happens to be the transmission then I'll probably just buy another car...

Anyhow I've done some search on the net on how to check Alero transmission oil some say got to be check a the dealer or a garage or checking by removing the plug... what plug??
The only one that I know of is the big red one where you can put oil in , does this is the same plug they are talking about to check to oil level?

Thanks!