? About a code

C

c55asleep

New member
Apr 23, 2009
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Miami,Fl
I'm curious to know if a faulty 1056sc torque convertor on a six speed cause a po777? Tranny is built with a stage four suncoast. It's on a Chevy lmm. The truck has a programmer, I believe it's a ppe on level 4 or 5. Tia for any help.
 
Kat

Kat

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Aug 2, 2006
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Norco, CA
From what I have read from Mike L.. I could be the transfer case or speed senor...
 
Mike L.

Mike L.

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Aug 12, 2006
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Kat said:
From what I have read from Mike L.. I could be the transfer case or speed senor...
Click to expand...

Correct.

P0777 indicates an off going clutch did not get released fast enough before the on coming clutch applied. ( tie-up ) It's important to know on which shift this code was thrown. If it was 3/4 it can rip the spline off C2 hub and P2 planet. Get it fixed before you hammer on it any more.
 
C

c55asleep

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Apr 23, 2009
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Miami,Fl
Mike L. said:
Correct.

P0777 indicates an off going clutch did not get released fast enough before the on coming clutch applied. ( tie-up ) It's important to know on which shift this code was thrown. If it was 3/4 it can rip the spline off C2 hub and P2 planet. Get it fixed before you hammer on it any more.
Click to expand...


Thanks Mike. My friend was getting on to the highway and he punched it. After punching he said it was fine until about 70 or 80mph then it limped and threw the code. He did mention that it felt like the torque convertor was taking longer than the usual to lock up. Reason I asked about the convertor. He had some local shop build it about a year ago.
 
DMAXchris

DMAXchris

It’s only temporary!
Apr 28, 2009
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Natrona Heights PA
I just got this code tonight as well. Same situation, rolling into it on an on-ramp. First time the truck was WOT after sitting for 6 months.
How do you know which sensor needs replaced? TechII?
 
Mike L.

Mike L.

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DMAXchris said:
I just got this code tonight as well. Same situation, rolling into it on an on-ramp. First time the truck was WOT after sitting for 6 months.
How do you know which sensor needs replaced? TechII?
Click to expand...

Without a code we don't know where to look. Call me monday with some info and we'll try and figure it out.:D
 
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