I have a 2005 Chevy trailblazer LS V8 4x4 I recently replaced transmission valve body with new solenoids and wire harness. It drove good for about a month and then all of a sudden without notice I was driving on hwy going about 65mph and my rpms started to jump really high like if I had accelerated. After that the I pulled over put it in park and then to drive I got no response not even from the 4x4. It wasn't making any whinning noises or grinding just didn't catch gear. I had to tow it. So I was able to get a replacement and I put it on checked fuses and shift cable everything is fine. I'm able to shift it and everything and it still doesn't want to take off in reverse,4x4 or drive. The transmission fluid had no metal shavings it was good. Someone please help I cant figure it out or even get it to a mechanic because it wont do anything.

 

Does it hold when you put in park, or will it still roll? If it will move, the problem may be in the transfer case.

 

Would The transfer case go bad Without notice I literally felt no jerking I did not hear any grinding there was no sluggish response when I would accelerate or during take off I tried putting it into 4lo and it did stall out however that is the only time it stalled out there is no check engine light on either I did notice when I switched the **** the 4lo and 2h light continued to blink together I could hear it electronically switching underneath it but it still didn't do anything I do have a code reader and there are no codes read just evap leak would a evap leak cause it to do this?

 

Transfer cases don't normally just spontaneously stop working, but it's certainly possible. Everything works right before it doesn't. That little test I mentioned (see if it will roll in park) will basically tell you if everything is "connected" between the transmission and the tires, which would eliminate the transfer case and rear end.

 

Go pull dipstick for the transmission out without starting engine and note how far above max fill line the fluid is. Then go start it and check it again running and see if the level dropped. A very common issue is pump rotor will break with no warning or noise. if fluid level changes then the pump is working. Good luck.
Brad

 

So I tried rocking it to see if it would roll while vehicle is in park and it seems everything is in in tacked. I tried to do the rest with the battery and even the key reset and still nothing. I have a another question is a check ball sent into the wrong channel could this cause it not to move

 

Listen to Transman

 

Listen to Les

George

 

Listen to George.

 

Thank all of you for your help, I really appreciate it I'll try it