So I have a 2000 Chevy Surburban with the 5.3 and the 4l60e transmission when I put it in reverse it goes just fine but when I put it in drive it feels like I’m in 3rd or overdrive it goes good if I manually switch the gears but it won’t do it on its own I have replaced all the solenoids in the transmission and still no change I changed my map sensors and the speed sensor because I read that those can cause it to do that but still nothing it will only go thro the gears if I manually select them please help.

 

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