Thread: Tranny help

When is it slipping? From stop lights or while in motion?

Does it slip in all gears or just 3 and D?

I would first go by a trans shop and get a free diagnosis (you want the code scanned). And provide us more details on what it's doing. Like Brian said, is it upon taking off, in gears, or during a shift??

Sounds like the forward band is going out.

Click this link:Triple Edge Performance - Home Page

The 5th option from the top lists the most common 4t65E problems, see if that helps you diagnose it.

Originally Posted by Explicit_Spade

Sounds like the forward band is going out.

Click this link:Triple Edge Performance - Home Page

The 5th option from the top lists the most common 4t65E problems, see if that helps you diagnose it.

When I mentioned forward band, Bill says this http://www.grandprixforums.net/could...tml#post796959

cause it's etiher broken, working or cooked beyond black

so i'm back to input piston seal theory that Dave has said.

Originally Posted by drydd

Thanks for the link, I really couldnt tell alot from what was there. I just wonder why its great while cold then it gets worse .

Thats usually a sign of a fluid pressure issue. Fluid thins out as it gets warm.

When is the last time it got a trand fluid and filter change?

The link was more for Brian because an experienced individual said that the forward band either works or it doesn't.

But check out 4T65E Common Problems for common problems.

Honestly, I would try that before replacing the hard parts. 2 bottles of fluid, a filter and gasket all cost $50 at autozone. I think it might help you out here, and it can't hurt anything.

Drop the pan, clean the magnet, pull the filter, then put it all back together and fill it up. I did mine a couple weeks ago in my 05 and I think it took 2-3 hours total.

Whatever you do, don't flush the fluid, it can cause more harm than good.

yeah. a pan drop (fluid and filter and lucas) helped me quite a bit with my weird problems. But if you have something internally wrong, then only a rebuild will fix it. I suggest doing a pan drop and seeing how it goes, and of course getting a free diagnosis and finding what code it's throwing you. There are some common codes that will give us a clue to such problems as a PCS (pressure control solenoid) etc

you will need 7-8 quarts of fluid, so buy 2 gallons of dex iii. and REUSE THE STOCK GASKET!!

Originally Posted by brandonl2000

REUSE THE STOCK GASKET!!

I disagree with this, the gaskets that come with the filter work just fine.

Originally Posted by Explicit_Spade

I disagree with this, the gaskets that come with the filter work just fine.

it may work fine...but have you compared the stock gasket with the new one? stock is strong and thick, the new one is cheap thin and flemsy.

again, Bill and many others will advise you to re-use stock gasket as well. i have re-used mine 3 times now. the gasket is much more superior than the others. it doesn't make sense to use a lower quality gasket.

Just do a filter and fluid change with a bottle of lucas stop slip and see if it helps. Takes less than an hour and couldn't hurt anything.

Little late to the party. Some of the stuff you describe sounds a bit like a filter is a wise choice. The whistle/whine may be the pump starving for fluid. If that's the case it could explain the slippage. The slipping after warming up does sound like seals, maybe not though.

I do recommend reusing the stock gasket if it looks good. GM designed it to be a lifetime gasket that gets reused. The cheap rubber/cork one that comes with the filter kit will work, but it's not the same quality as the factory one with the ribs etc.