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What does it mean when your tranny suddenly decides not to shift into 3 and 4th gear? Then when you disconnect the battery for a few hours it is fine again?
First let me jump on you for being questionably in the wrong forum
OK, now that's over, let me jump on me for answering a questionably wrong forum question
Now for the Smart <bleep> answer:
It means you need to install a battery switch to make it more convenient to shut off your power and clear your xmission program periodically, congratulations you have a Microsoft truck.
Now for my humble suggestion/opinion...
I'd check all the fluids and reset it one more time, then while driving I'd watch the tranny temp. to see if something odd was happening. Then I'd post a question to this group, take the flames and the smart <bleep> answers. I'd try to see if there were any bulletins, then as a last resort go to the dealer with it malfunctioning and have them fix it.
Robert
Well... no one else responded, so I'm doing my best
Your trans is telling you "something is wrong". I am sure you already know this. you need to take it to the dealer or trans shop that works on these transmissions, and have it looked at. Maybe you can still save it. The transmission defaults to second when a fault is noted, this is suppose to aid in keeping it from slipping, but you should have it looked at soon.
I talked to Brian's Turck Shop and we narrowed it down to 1 of 2 things, MLP sensor or shift solenoid. It hasn't done it again but when it does we can eliminate one suspect and I can get the part to fix it, either part is 100-150 bucks new.