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Hey i have a 99 silverado 2wd with the 4.3 and 4l60e transmission. The cooler line had a leak in it and my uncle kept driving it and now it has no 3rd and 4th gears. My question is, is that my buddy has a trans out of a 01 silverado 2wd with the 5.3. Both transmission look identical side by side. Only difference i can see is that mine has a 46 on the side and his has a 50 on the side. I was wondering if his transmission would work in my truck.
thanks
Same trans
yes they are the same.
same just swap the selector switch off ur stock trans onto the new one..
Thanks. I got the trans in and it wont shift on its own. Drive and over drive act like neutral, 2nd gear and 1st will work when siting still. When i get it in 1st i have to manual shift up through the gears when i get going, and when i stop i have to pull it back to 1st to make the truck move. It shifted fine with the old trans, i dont know whats going on.
Any Codes? Are you sure everything is hooked up right?
Yeah i double checked everything. The weird thing is when i drove it around it didnt throw and code. But when i let it idle for awhile it threw the SES light. It had 3 codes p0785, p0740 p1860. I deleted the codes and pulled out of my street and the truck shifted like it was suppose to. When i came to a stop it went back to not working. I had to pull it into first for the trans to ingage in gear and then had to manually shift it. The SES light hasnt came back on yet.