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Transmission Service Required message came on with CEL. Code read was P0740.
The car accelerates fine at start up when engine is cold. After 3 or 4 miles, goes into limp mode, cruise control stops working, and starting from a dead stop feels like it is trying to take off from 2nd or 3rd gear instead of 1st. Otherwise, transmission seems to be working fine.
I'm thinking replacing the three linear solenoids with new ones from Rostra might fix this? Can these be replaced without pulling the transmission or removing the valve body?
Any suggestions and comments appreciated!
 

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It could also be the PNP switch. I've had one go bad before and it left me in limp mode. Basically stuck in 3rd gear when in drive.

The solenoid kit would require removal of the control cover not complete disassembly of the valve body.

I'd have the codes read or find someone with a vida/dice tool to scan the TCM for codes also.
 
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