My car does not change gear on 2001 Chevrolet Venture

My minivan won't gear, it's like it's stuc in one gear. I had my van change the transmission filter and oil about 5 months ago (it was giving me same problem) and it helped. But now it's giving me same headache. What can be the problem?

2 answers
it could be the pressure plate you might want to get your trans. rebuilt
Sounds like you need to rebuilt the transmission. Come see us at Hialeah Autocare and will let you know at no charge. Our phone is 305.556.9681.