97 Blazer Transmission Wont Shift
 

Built a 97 blazer for my girlfriend. Vehicle ran great for 2 days, was a little delayed shifting out of first gear. Sometimes it would shift out of first between 3000 rpm 3500rpm, other times would be between 4000 & 5000 rpm. Well went to drive it yesterday & it would not shift out of first gear at all. Reverse works fine. Think it caused me to spin a rod bearing because rpms were high at times & was about 2-3 miles from home. So i know how to fix motor, will pull it & put new rods & mains & new oil pump also. But don't know much about transmissions. I have had some issues with my 97 Jimmy but mine was ignition switch harness, after tranny shop installed all new solenoids & it still done the same thing. I have no engine codes, & i had just changed fluid & filter, also did corvette servos install, with a new B&M supercooler. Also have installed new igntion switch harness. Any help appreciated. Thanks

Talked with my uncle who looked up what he could find on Alltel & said he believes it is the valve body. Anyone know if he would be right. Any help appreciated. Thanks

Anyone?

Have you checked throttle position sensor or speed sensor?

No i haven't. I thought if the vss was bad the speedo will not work, mine works fine. Will swap tps with a spare & see if that helps. Thanks for the input, will keep you all posted. Thanks

These trannys have problems with the check balls sticking and burying in the valve body, so yes, that could be the problem.

How can you unstick the stuck check balls? If it's possible.

Fuses for the electronic transmission will cause it to go in limp mode, CHECK YOUR FUSE. A blown fuse will give torque converter solenoid open circuit, solenoid A open, Solenoid B open, plus other codes...