Thread: No first gear....

so i blew up my trans in the car... took it to a shop and the guy rebuilt a trans and threw it in my car(not original trans)... then he says it has a shift problem and screws with it for a week... finally he told me to pick the car up hes done working on it... car runs great but there is no manual 1st and it takes off in second when in drive... other then that it runs great...

there is a vibration when i floor it when its in the right gear but i feel that is a bad halfshaft that has been going bad(guessing)...

im guessing no first is a solenoid the guy was to lazy to replace or the pcm... any other ideas before i take it to another shop.... luckly this guy didnt charge me a penny or id be super pissed

just to clarify some more... revers works 2nd works 3rd works.... didnt want to get to far from home so i dont eaxactly know about 4th but i think it went into 4th

the guy didnt charge me a penny... he said hes done trying.... he rebuilt it... when i took it in it was whinning and slipping and and had part of a bearing in the pan... now it drives great just no 1st and i didnt pay the guy anything

if anythign im taking it to someone else and having them take it apart... id rather pay someone else then pay this first idiot anythign

In that case, guess you can't complain too much.

i can complain that there is no first with my free rebuild lol... im thinking its the pcm and im planning on a reflash in the morning but i wanted to run it by on here and see if anyone else had any ideas

my final drive was used so it should be the same gears correct?

what gets me is in the GM hydromatic 4t65e tech guide book there isnt many problems that go from 1st gear in drive and relate to 1st gear in manual...

i have
manual valve(404)/ shift linkage-misaligned
servo cover(104) broken, loose or leaking


then (what my guess is) the pcm...

Manual valve and servo cover are likely suspects the more I read. PCM doesn't do much in manual first. Nothing more than what it does in D.

ill command first in the morning with the laptop and go from there... rewrite the pcm... then maybe mess with the linkage and see if maybe its out of wack... if that doesnt do it then ill be taking it to another shop thursday... this guy figured servo from the beging i would think when he droped it out the second time he would of just replaced it and been done and got payed but maybe not

ok after further reserch ive found there is no 4th

reflashing the ecu didnt help

i commanded 1st with nothing

then i manually grounded the terminal to comand 1st with nothing


now with knowing 4th is gone to im going with it being the 1-2, 3-4 shift solenoid...

Originally Posted by hitman92499

I just realized that these are not the pictures I originally posted. Weird.

Damn alldata and its stupidity. LOL

I certainly do. lol