Thread: Tranny Coolers-

Usually these transmissions don't get to bad with the 3.8. Its people with the 5.3L that have all the extreme heat problems and have to add a cooler. Do u know what temps your tranny runs at?

your tranny is on its way out if it slips when the trans is hot, hotter it gets the thinner the fluid gets. aka clutches are worn out.

have you done a trans service yet? hows the fluid look? add any lucas to the tranny?

How often is what ZZP says right????

LOL

Originally Posted by GTByron

Fluid is Brown and burnt. Will the shift kit help my tranny at all with slippage? Add 2 bottles of Lucas already.

sounds like its on its last legs. burnt fluid is no good, and after 2 bottles of lucas, and its not helping any more. times up.

yo could try a pan drop and filter change, and another qt of lucas. but its a crap shoot at best how much longer it will last.

your filter could be clogged up and causing some of this. be warned tho, with bad burnt up fluid and slipping, even a pan drop is a risk if you ask me.

if you do drop the pan, i'd think you got a 50/50 shot its still working right after the service. it could just no longer work. or it may work just fine. you never know when its in the condition your is in.

Yes and no more Lucas just dex6 never flush the trans either

dex 6 is thinner,( not what you want now) and we dont know your year car, 6 is for the newer trannys. id stick to dex 3 if your 97-03

if you dump the pan, id add another quart of lucas as well. with 6 qts of new tranny fluid. should take about 7 qts to refill it in total.

AND DONT FLUSH IT! that would be a death sentence for sure.

Originally Posted by Scottydoggs

AND DONT FLUSH IT! that would be a death sentence for sure.

Scott can you elaborate on this? When I had my tranny fluid serviced at Jiffy what do you think they did? A flush? Since my fluid change ive had no problems and I was thinking about servicing the tranny again as I am about there again mileage wise.

Originally Posted by h0wl0ngcanitbe

Scott can you elaborate on this? When I had my tranny fluid serviced at Jiffy what do you think they did? A flush? Since my fluid change ive had no problems and I was thinking about servicing the tranny again as I am about there again mileage wise.

I do not have a lot of experience with GP, but im working my way up. I have however been working on diesels and HD CVT transmissions for the last 2 years, and hears my 2 cents:
The reason not to flush an old tranny is that the material from the clutches has worn off of the clutches and is now in the fluid itself. A pan drop does not replace enough of the "dirty" fluid to kill the transmission after it is in this condition, because the remainder of the fluid still has enough friction material in it to grip and shift. A trans flush will completely remove all of the lost friction material (and probably clogs alot of the ports in the valve body IMO) and your clutches wont grip.
I have been told by GM for my 4t65 that at 75k the trans should be serviced (pan drop, filter change). after 100k, or "burning" your atf, your pretty much out of luck and you just got to limp it till it dies.

From experience...I never flushed the trans on my 3.4 impala, and against experienced advice i added lucas stop slip to it around 115k, and broke my imput shaft around 125k. Coincidence probably, but the main point is that it cost me 1800 to fix. Im pretty sure a TE performance tranny will run you about that much no including install.

My advice before this post turns to a book...dont add any performance parts or shift kits to this tranny, run it till it dies and then buy a new one with a new TC. Or sell the car while its still running and buy another GP in better shape!

Originally Posted by h0wl0ngcanitbe

Scott can you elaborate on this? When I had my tranny fluid serviced at Jiffy what do you think they did? A flush? Since my fluid change ive had no problems and I was thinking about servicing the tranny again as I am about there again mileage wise.

how many miles did your trans have when flushed? and had it been serviced before the flush in its life time?

i used to flush my 97 truck every year, i did put 30,000 hard miles on it a year, and that tranny lasted a long time before it let go. i also owned the truck from new.

at this point if your fluid is still nice and red looking, service away. cant hurt if its due, like 50,000 miles since the flush. some like to do it every 30,000 miles, 50 the norm tho.

what happens is the old burnt up dark fluid is full of clutch material, its what is keeping the trans working. if you flush all the old fluid out, and replace it all, the tranny wont work 90% of the time. most jiffy lube places if you have over 70,000 miles and have dark fluid they wont flush it. if you insist they make you sign a waver so you cant sue them if it dont drive out of the shop or fails later on.

had a friend who was the manager at one of these places. i was hanging out there one day and hes like watch this crap. walk out to a customer comes back with a signed paper, says this car will need a tow truck, the owner wont listen, they did the flush, and then he paid, put the car in gear and nothing. next call was for a tow truck.

Dex 6 is a retro Scotty all dex 3 trans can use it. Did the same in my 97 you can always search as well but hands down dex 6 is a better fluid regardless of fluid condition the same would happen with dex 3 if you put clean fluid in the same could happen. Here's a link BTW. Dexron VI (6)??????

Originally Posted by 91parkave

Dex 6 is a retro Scotty all dex 3 trans can use it. Did the same in my 97 you can always search as well but hands down dex 6 is a better fluid regardless of fluid condition the same would happen with dex 3 if you put clean fluid in the same could happen. Here's a link BTW. Dexron VI (6)??????

from info posted here, its best to keep the dex 3 in a old trans being serviced. dex 6 works, but it is thinner. last thing you want is fluid thats thinner in a old worn out tranny.

if the older model trans is a fresh rebuild dex 6 is just fine to use.

dex 6 is the newest grade of fluid. its for newer cars.

like i said, its a risk. 50/50 shot. maybe best to milk it along and save up for a jy tranny or used one off craigslist from a part out or something. rebuilds cost a lot. 1500 to 2000 most of the time.