Tranny Shifting Problems?

I have a 91 k2500 (6 lug) w/ a 350 ci. When my truck shifts into the last gear, it shifts real fast, like it will shift into the last gear going about 35-40 mph, is that something that all chevys do or not?

Not sure if the TH400 was an option for 91. If it is a 4L60 (700R4) 4 speed, then it will shift into 4th at 40 at light throttle conditions. The more throttle, the later it should shift into 4th.

Your sig says you have a shift kit and that can affect how hard or fast it shifts. Which shift kit do you have installed?

The TV Cable needs to be adjusted properly for the 4L60 to shift correctly.

//2000CAYukon