MAYH3M

iTrader: (12)

So, Long story short, My 4th Gear disappeared right after I had my Transmission Tuned at Speed Inc. Speed Inc wouldn't give me so much as a refund and pretty much told me to **** off for thinking they had something to do with it. There was nothing I did to make my freshly rebuilt Trans lose 4th.

Anyways, I've been doing some research about it, and the only thing I could come up with is the 2-4 band is slipping and and that the servo seals may be bad. I already replaced all of my 3-4 clutchpacks, and replaced the 1-2 shift solenoid about a month ago.

Should I upgrade to a Corvette Servo and see if that fixes that? Can I swap out the servos or 2-4 band with the trans in the car or no?

Thanks guys,
MAYH3M

performabuilt

iTrader: (25)

You already have the corvette servo.
Since you have second the band most likley is ok. I would look at the 4th servo.
It is unlikley that tuning caused and issue of this type.
I would however use a scanner to verify that the command is being given.
Also are you sure its 4th your missing and not lockup

MAYH3M

iTrader: (12)

Yeah, the computer is commanding 4th, it's just not shifting into 4th Gear.

and, I already have a corvette servo? I never upgraded it, unless Corvette Servo's come in all 4L60E's.

Thanks

performabuilt

iTrader: (25)

It does not come in all 4l60e but does come in all v8 f body 4l60e

MAYH3M

iTrader: (12)

I see. Would a Problem with the Servo have anything to do with losing 4th gear? or the 2-4 band?

Thanks

performabuilt

iTrader: (25)

tHE 4TH servo is what applied the band in 4th gear The 2-4 band is used in both 2nd and 4th gears but applied by two different servos.

MAYH3M

iTrader: (12)

So, any ideas on what it could be?

performabuilt

iTrader: (25)

I would check out the 4th gear servo .

MAYH3M

iTrader: (12)

Okay, Can I check it with the Transmission in the car?