6th gen tranny issue

[04MonteLS]

I have a 2004 LS and when I am slowing for a stop light, then before coming to a complete stop, I press on the gas and when the tranny kicks back into gear it engages kinda hard. It's noticeable, kinda jerks a little bit. Anyone else have this problem?

[montecarlossfan]

there should be a little jerk as the rpms come up against the torque converter....but it shouldnt be a slam into gear unless you romp on it mine gives a slight tug when i am moving slowly then hit the gas.

[04MonteLS]

Originally Posted by montecarlossfan

there should be a little jerk as the rpms come up against the torque converter....but it shouldnt be a slam into gear unless you romp on it mine gives a slight tug when i am moving slowly then hit the gas.

yeah, no slamming going on, like you said, a slight tug would be a good way to describe it. So it's normal huh?

[montecarlossfan]

yeah thats normal..its almost like its between gears then it hits the next when you are at certain slow speeds

[04MonteLS]

Originally Posted by montecarlossfan

yeah thats normal..its almost like its between gears then it hits the next when you are at certain slow speeds

you hit the nail right on the head! I have heard increasing the tranny line pressure will alleviate this, do you know that to be true? A friend of mine has a SS and the HyperTech programmer and did away with this issue. I have a LS so the programmer won't work, but I did find a tranny interceptor on PFYC.com which is supposed to tighten up the shifts and increase the tranny line pressure. And it's only $129, a simple plug in deal.

[montecarlossfan]

ehhh..thats kind of iffy that thing actually messes stuff up i heard..you can order a shift kit for your monte which will do that...the old style kit is 49..the new one is 99...you can i repeat CAN use the shift kit designed for the ss...the ls has the same tranny

[04MonteLS]

Originally Posted by montecarlossfan

ehhh..thats kind of iffy that thing actually messes stuff up i heard..you can order a shift kit for your monte which will do that...the old style kit is 49..the new one is 99...you can i repeat CAN use the shift kit designed for the ss...the ls has the same tranny

Only $99 for a shift kit? Wow, where can I find one? What does it consist of? What does it do?

[montecarlossfan]

goto 3800performance.com and go under drivetrain and look at the shift kit...it consists of springs and shims which will raise line pressure....they have 3 settings mild wild and bang-screech....should only take an hour or so to put it in plus you will change the fluid and filter in the tranny while you are at it..so that takes car eof one more maintainence item

[04MonteLS]

Originally Posted by montecarlossfan

goto 3800performance.com and go under drivetrain and look at the shift kit...it consists of springs and shims which will raise line pressure....they have 3 settings mild wild and bang-screech....should only take an hour or so to put it in plus you will change the fluid and filter in the tranny while you are at it..so that takes car eof one more maintainence item

what?! So this is something a shadetree mechanic like myself can do? That makes it even better! I'mma go check it out. Thanks for the help man.

[montecarlossfan]

yah its easy..mine took me like an hour and a half.. i have mine set on bang screech haha...it really shifts hard

[04MonteLS]

Originally Posted by montecarlossfan

yah its easy..mine took me like an hour and a half.. i have mine set on bang screech haha...it really shifts hard

haha, so it just effects the shifting, not the issue we were talking about? My 1-2 shift is pretty pronounced under acceleration, but the rest are soft.

[montecarlossfan]

mine doesnt really do it any more.... but if you want to raise line pressure throught the pcm you should check with the dealer on any updates through gm TRY CALID.GM.COM this will show u all the new pcm updates the dealer can do

[04MonteLS]

Originally Posted by montecarlossfan

mine doesnt really do it any more.... but if you want to raise line pressure throught the pcm you should check with the dealer on any updates through gm TRY CALID.GM.COM this will show u all the new pcm updates the dealer can do

I don't have a problem installing the kit, it'll get me more familiar with my car as well as give me the ability to increase or decrease the pressure as I see fit. Thanks for the help man, I appreciate it. If only HyperTech would make a programmer for us 3400 guys.