I have some problems with my gearbox. When I shift from park to drive or reverse, it slams into gear. From 1 to 2 gear it goes into gear hard, and I have to go up to 3000 rpm before shifting. If I let the gas it goes into gear before. When lock up, and I start to run down a hill and release the gas it will go out of lock up, if I then begin to accelerate again it begins to shift down a gear. And sometimes it can lock up. Is it normal to Disengage lock up when you release the gas pedal? Is there anyone who can provide some answers to these problems. Have checked the oil level and added some liter. There should be proper level now. Sorry about my english.

 

Id try a new throttle position sensor. If thats not it,and your fluid is within level (hot,in park) its time for a new trans.

Sadly so you are in 95,a single year only. So no a 96 wouldnt work. and make sure its 4l60e.

 

95 is just... an interesting year to say the least, what was GM thinking.