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[TRANS] P0766 & P2703

7507 Views 9 Replies 4 Participants Last post by  Texkenusmc
Wow, been awhile since I've been back here! My non-studded baby is now over 240k with a Tuner, EGR Delete, and some new injectors / IPR.

Had these codes pop up earlier in the week after the truck did a hard shift and tow / haul started flashing which prompted the scan. After letting it sit overnight, drove fine the next day, and then it came back with another hard shift. Did a trans pan drain and fill, approx 9qts. This seemed to help it for a few days and then it came back. Took it to a local diesel shop (Triple C, Jacksonville, NC). Owner/Tech. there test drove it and scanned it getting the same codes. He told me that it is a $100 bushing that is causing the problem, but he won't replace it without doing a full rebuild.

Also to be noted, truck will not go into overdrive. Monitoring it as I drive it will sometimes skip 4th and go right into 5th. I am guessing I have low pressure going to the TC as it is now bucking in reverse.

Kind of in a pinch between a rock and a hard place. Been trying to sell the truck off, but don't want to drop $3k on a rebuild. How should I proceed if I am to keep the truck for a little while longer without doing more damage? Get a rebuild? Replace the bushing? Do a trans fluid flush? New tranny? Donor tranny?

Not sure if anyone has a program (such as FORScan that I use) that can open and read .fsl files. I can post a few if someone does.
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Thanks for the replies, have yet to change anything out.

With the truck struggling in reverse, doing its bucking and sometimes not working at all, is this an issue that could be caused by the Shift D sensor? Or is it another problem?
So it's looking like time for a rebuild then, right? Sorry for all the questions, I know just about nothing when it comes to transmissions.
Hey check the transmission shop in Hampstead NC it is right past the DMV office. He is good he has worked on a few of my trucks. I lived up there for 20 years tell him Tex sent you. I use to hunt with his son in the gamelands.

I appreciate it Tex, I'm guessing you were over here at Lejeune? I was a Doc with 1/8 but just PCA'd over to 2/8
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