I realize this is a 3rd gen site, but I also know their are alot of 4th gen owners here to, so bear with me, or if you know a good 4th gen site send me there. This is on a 94 Z28, LT1, 4L60E, 203,000
The other my friend let someone jump another car off of hers. Then her trans started to act funny.

In the morning it will shift into all 4 gears fine, after about 2 miles, it will not go into OD, she says she can manually shift%