MY 1995 Chevy Beretta, has a 4T60E transmission. The Trans wont shift into overdrive. Shifts flawlessly all the way up to 3rd, but just wont get into 4th.What could this problem be? Also, b4 this happened it started making a whine sound. Thought it was the power steering but then this, no shift into overdrive happened.
Anyone with ideas? Truly appreciate it