Hey Guys,

I've been dealing with this flare for a little while now, didn't pay much attention to it until I started to feel it on the 2-3 shift as well. I know that I can change my shift pressures with my SCT, but I really would like to get this figured out and not "mask" a problem if 1 truly exists.

I'm not really good with trannies, but I was hoping someone can point me in a direction. I've done a general TSB search and I did replace my DC solenoid thinking maybe that would help with the 3-4 shift but it didn't change.

The truck has no codes in it and fluid is full and clean, last year when I pulled the pan to do a service there was no debris or discoloration in the pan or in the external filter or housing. Also my temps seem to be in check with the highest I see towing is about 190*

Sarge

 

Bumpin it up so hopefully Mark sees it!!!

Thanks,

Sarge

 

I eliminated the 3-5 flare with a modified direct clutch solenoid. I have to back the shift pressures down by 5 percent with my sct tuner.

 

I have a modified solenoid as well, but it didn't help the 3-4 at all.

Sarge

 

You mean the shift that only happens when it is really cold or on some downshifts?

 

Down shifts are normally good, its just upshifts that have the flare, most noticeable is the 3-4 upshift.

Sarge

 

Are you sure that it is actually 3-4?

The trans usually shifts
1-2
2-3
3-5
5-6

4th is only used at certain times.

 

Well according to my CTS its 3-4, I never see 6 only 5 Lock.

Sarge

 

My Edge Insight says the same thing. It is actually the 3-5 shift that is taking place.

Which modified solenoid did you install?

 

IM pretty sure it was the direct clutch soloniod

 

Who modded it?

 

The direct clutch is not applied in 4th gear. It is on in 5th and 6th. 4th gear is the intermediate and overdrive clutches.

 

Empire Performance Engineering.

So where do I start to look Mark...possibly another solenoid or internal hard parts?


Sarge

 

I had a similar problem before my tranny went, What caused it was The Manual Valve had been worn and I would loose pressure. I had a delay from P to R & D, It finally went and wiped out the TC and burned all the clutches.

I mot saying thats you problem but I would get it checked out before it cost you $3,500 plus......

 

The only thing that the 2-3 and 3-5 shifts have in common is the intermediate. The intermediate clutch is applied by the intermediate solenoid for the 2-3 shift, and the intermediate clutch is released by the intermediate solenoid for the 3-5 shift. Other things are happening during those shifts, too.

If the intermediate solenoid were the problem it would have to be slow to apply and too fast to release to create a flare on both the 2-3 and 3-5. Is it possible? I can't say it's impossible, but it seems improbable.

The theory that the manual valve is leaking seems more likely to me.