hi,
started the van this morning put it in drive and it started shaking put it in park and stopped put it back in drive and started shaking again drove it, wouldn't go into drive gear unless above 40km if below 40km had to use 2nd gear, seems that it would be tranny but unsure checked tranny fluid thats all good and doesn't smell burnt. Any idea on what it would be? The rpm would rise like it's going but speed would not increase in drive.

thanks