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 ***** sticking and burying in the valve body, so yes, that could be the problem.

 

How can you unstick the stuck check *****? 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...