742 code tq converter clutch

J17HENRY

New member
May 23, 2009
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alabama
Rolled into throttle in 4th nice and slow, shifted out fine. Then I stopped at a light and it shifting funny. read the code 742 tq converter clutch stuck on, cleared the code drove truck again same thing. Truck wants to pull all the time foward or rev. How can this be fixed? thanks.
 

Mike L.

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Aug 12, 2006
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Fullerton CA
Rolled into throttle in 4th nice and slow, shifted out fine. Then I stopped at a light and it shifting funny. read the code 742 tq converter clutch stuck on, cleared the code drove truck again same thing. Truck wants to pull all the time foward or rev. How can this be fixed? thanks.

Converter went south.
 

Mike L.

Got Sheep?
Staff member
Vendor/Sponsor
Aug 12, 2006
15,681
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63
Fullerton CA
Easy way is to just replace it. I personaly have not seen one do it. If the solenoid was at fault, it should kill the motor.
 

chevyburnout1

Fixing it till it breaks
Aug 25, 2008
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Berthoud, CO
It wouldn't be that restrictor falling out of the transgo valve would it? That's exactly what happened to mine.

Edit: That's assuming you have the transgo converter valve installed.
 
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J17HENRY

New member
May 23, 2009
52
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0
alabama
I would guess it has the lock up valve not sure. It is a suncoast kit and converter. How can u tell if that is the problem?
 

J17HENRY

New member
May 23, 2009
52
0
0
alabama
drove the truck and it was really lungey kinda like a manual tranny. just before I pulled in the drive it set 700 and 872 code. the 742 code has not come back.