slippin' tranny (well kinda)

[SinisterZ26]

first off i want to say thank you to bszopi & IsaacHayes for the help with my vac lines to my heater controls!!!! { by the way it was the line below the battery IsaacHayes and the bat. did leak before i bought it.}

anyway now to the tranny. i cant say thats its slippin cuz she purrs like a kittin threw all gears and shifts with no problem. but when i shift the prndl from say park to reverse or drive there is quite the delay before it throws power. sometimes i have to give her some gas to engage. but this dont happen all the time either. like i said, once she is engaged she works awesome. i just took her from mid Pa. to Atlantic City over the weekend and not so much as a fart or burp from my girl!! i put on 250 mile on the way back and only used a 1/3 tank of gas but im concerned about the tranny.

any suggestions?

Respectfully,
Phil's {SinisterZ26}

[gectek]

if it is a 4t40 or 45, then its the rev input drum, ull prob have to either
1. overhaul
2. get a used trans that is newer than 03 IIRC
3. buy a new drum that has the provisions for the lagging engagement, then overhaul
4. usually the rev clutches are pretty burned also, so ull have to get them replaced.

there is a tsb out about this and gm fixes it on the 03 model trans, but not on the others, so u have to take it off, put the new plates and frictions in, and then measure to find which selective plate to use.

also u might want to bump up the pressure ti help engage the clutches faster.

oh and a problem on mine that compounded the issue was that the trans mounts were broken, like almost out of the entire mount, so check that also

[bszopi]

Its a 4T60E.

[gectek]

okie dokie, my bad, well actually i think not, IIRC they had about the same prob with their rev clutches/drum

[IsaacHayes]

I have an easy fix for you that I did to mine.

Go to the dealer, pick up a bottle of "GM Automatic Transmission Seal Conditioner". Put a funnel in the transfluid dipstick tube and pour the stuff in. Now drive it around. 800-1000miles later it should take care of it.

Mine was really bad for 2 years like that. It only did it in cold weather. Sometimes I'd have to let the car warm up to full temp before it would engange. (the trans fluid circulates through the radiator, and that warmed it up).

The problem is the seals have shrunk/hardened. When warm they expand no problem. When cold, it doesn't. The GM seal conditioner swells the seals and fixes the problem.

Cheapest, easiest, $6 transmission work I've ever heard of!

After I did this, not only did it fix that problem, but it shifted SO fast and smooth. It works like a new transmission now. I've had my car since 1999, and its got 200,000 miles on the engine and trans all original. And it runs so damn good still!

Try it out, it's only $6 you got nothing to loose! Just get the GM one and not some other off brand. Go to the dealership and go to the parts counter and ask for it.

[SinisterZ26]

once again thank you IsaacHayes!!! i was gonna post a question as to what additive i should add to the tranny fluid. as i am planning on changing the fluid & filter {and both CV joints} this weekend. i was thinking along the line of some stuff called Trans-X, but i will do it your way!!

Peace!!!

[sharkey]

yes, its another "overhaul in a can". working in the transmission industry, i can say, at least half the customers we get in try some sort of additive (including the gm stuff) to stop the transmission from slipping. the thing is, a magic bottle of additive cant replace the friction material on the clutches, remove the pitting from the geartrain, or unstick valves in the valve body. most additives do swell the seals, but its much like when you get atf on normal rubber hose (like rad hose), it swells and gets very soft, and soft seals will end up blowing out. the additives also swell the valve body gaskets and can cause blocked oiil holes, ive even seen it to the point were a gasket swelled and blocked a lube hole, causing every bushing to burn up and taking out a planetary, and it ended up costing the customer way more than if they had just had it repaired to start with.

basicly what im getting at is additives arent gonna fix a worn out transmission. they may help for a couple weeks, but anything lasting longer than that is extremly rare. the only reason id use an additive is untill i could get the cash together for an overhaul.