GMPPDEALER

iTrader: (1)

Brand new 4l65 from GMPP. 2-3 flare at wfo. any ideas? Does it have corvette servo?? Thanks!!

mrvedit

I would start by putting a pressure gauge on it. It should be around 60 psi at idle in Park and Drive, 150 in Reverse. Importantly when you blip the throttle, it should jump to around 200 psi.
A MAF or TPS issue could prevent the PCM from command max line pressure, causing the flare.

GMPPDEALER

iTrader: (1)

I'll give it a shot... In OD with alittle push of the throttle the converter locks and unlocks

GMPPDEALER

iTrader: (1)

They do not come with the corvette servo.

GMPPDEALER

iTrader: (1)

No other ideas? Before I start.
Was a quart low, and I put a diff maf on it.. Going to dive it tonight.

mrvedit

A quart low on the shallow pan might have been the problem. Some members here run 1/2 Quart over to get rid of the 2-3 flare.

GMPPDEALER

iTrader: (1)

It's a tci deep pan. Kinda torquing me off.. Just got it back from the dyno, he said everything looks great on the computer, tranny has 160 miles on it.. With a new yank 3000.

PBA

Put the Pressure gauge on it as suggested. DO NOT let it do this, get out of the throttle immediately. Pressures must be right, otherwise it will not last. Make sure it has the Corvette servo, (you must have this) if not, add it asap.

mjs1012

iTrader: (36)

I would double check the fluid level, mine did the same thing when it was a little low.

bbond105

Listen to what PBA is telling you.

GMPPDEALER

iTrader: (1)

Going to put gauge on it soon, talked to GM and was sup to take it there " warranty ". But I think I'll try the pressure and a vette servo..

What part#'s do I need for vette servo??

jakeshoe

iTrader: (14)

If it has flared ONCE, it's damaged and will never be right.

Figure out the cause, and rebuild it or replace.

GMPPDEALER

iTrader: (1)

I ended up taking it to the dealer.. They called GMPP and they said no it's to much HP for that tranny. They told me it is slipping bad at 3/4 to full throttle.. But the dyno said it was not slipping. They would cover the parts but not labor... Now what..

And they said it does have the corvette servo..

Also they said the line pressure was good. Up to 220.

clinebarger

How much "power" is it putting down? To fry clutches in a few 100 miles with good line pressure....It better be a lot for that to be their answer!

GMPPDEALER

iTrader: (1)

Rear wheel was 415, and 409 tq

mrvedit

I would put a pressure gauge on it while driving to be sure the pressure really is 220 at high throttle.

A completely stock 4L65E should be able to handle that power level with little trouble. I suspect the PCM is not command max pressure at high throttle. Or the trans wasn't built correctly.

clinebarger

It shouldn't have burnt a clutch that quick, That's a fact. If they go in & throw frictions in it......That will not fix the problem. I would demand another unit...

GMPPDEALER

iTrader: (1)

I spoke with them yesterday for 2 hours, both the service manager and parts manager agree it should hold that power. So when he pulls it appart he is going to look it all over very good to see where the problem is.. They will not do another tranny because GM is being dicks about it..

And I have thought about the PCM...

GMPPDEALER

iTrader: (1)

They have it appart, seems like everything is fine....
Putting it back together with a transgo..

kinglt-1

iTrader: (26)

I suspect something in the tune...