I just edited the post. It’s a 1994 c1500 with 5.7 & 4l60e
I will check the servo out. 4th gear will engage but like stated not till it’s high rpms or you let off the gas
I purchased a rebuilt 4l60e and installed it myself. On initial notice of the new transmission it would shift into drive no problem. 1st to 2nd gear is beyond smooth and normal. Shifting into 3rd gear is also normal. When trying to shift into 4th gear I get to about 3500-3600rpms and it won’t...