Rebuilt Tranny Still Slipping

[macho4882]

Hello to all, new member here, finally signed up since im on silveradoss.com every day. i purchased a 2oo5 silverado in june with like 79K miles. 3rd owner according to Carfax. so bought in june and transmission failed in December (merry christmas right!). being that this truck is my daily driver i took it to a shop that a friend recommended in miami. (we all know how reliable mechanics/ transmission shops are in miami) so i got the truck back a week later and it was running again. i got a 6 month or 6K mile warranty, after driving it for 3 months i already passed the 6K. but i took it back to the guy because its doing the following.

 

(without failure) when it gets to 45mph it slips, feels like the gears are getting stuck, or like the truck got hit from the back. also when i go to step on it, it takes some time for the gears to catch. what can that be? from reading other forums i've seen it can be the torque converter. (the truck does kinda hop at 45 and 75 like if the tires need to be balanced)

 

when i took it back he checked the fluid and said it was high. will high tranny fluid level do that to a transmission?

 

when i take it back to the shop what sould i get done to enhance performance or get the tranny to shift smoother and to last me longer?

 

has stock motor with cold air intake and 24" rims.

 

Thanks to all.

[tonycillo]

first welcome! and cant wait to see pictures. you dont really want it shifting smoother the smoother it shifts the more it is slipping. i was told by the guy who did the tune on my SS by firming the shifting will make it last longer.

 

i am sure someone has something more and better info than me.

[bruiser04]

just sounds like the TC to me and those 24's prob aint helpin the life of the tranny im sure someone who knows a lil more on this subject will chime in

[macho4882]

Update on the Tranny issue. . .

 

Tranny started slipping again in the end of March so i took it right back to the Transmission place.

the guy said he would check it out, called me at the end of the week that the truck was ready to go. (mind you i've been on the phone with the guy 3 times a day that he needs to charge me my other arm and leg to fix what was wrong with it because i passed the 6K warranty) I told him he was out of his mind, so after going back and forth i agreed to pay $250 in parts.

So after i paid him and left the tranny shop i must of driven the truck for 15 mintutes, which gave the tranny enough time to warm up and start f*ckin up.

i would be stopped a t a light and let go of the break to go on green and the truck wouldn't move. i had to push the gas and rev the motor to 3K rpms for it to jump inot second gear. turned right back around and told him his work sucks or hes just tryin to pull a fast one on me.

 

after another week at the shop the truck is running now, still with the issue of terrible shifts. right before it shifts a gear the RPMs jump about 200 RPMs and hits hard (doesn't shift hard) just hits hard. hard to explain.

 

So i feel like the tranny will go again, just a matter of time.

 

heres my question, . . .

 

what can i do so that i dont have to worry about a transmission for at least two years. ..

 

should i buy a brand new tranny? if so what kind (model # or brand)

 

i called the national chevrolet hotline and gave the lady my vin # she said i had a HD4 automatic transmission? from reading forums i thought i had a 4l80???

how can i see what kind of tranny im supposed to have??

 

again i have a 2oo5 ss AWD

 

if i keep the shell of the tranny what rebuilt kit should i get?

 

maybe the transmission guy doesn't know what kind of tranny i have and is putting in wrong parts?

 

what updrades are out there?

 

please help!!

 

Thanks!