Need Transmission advice!

[Lifted02]

So my transmission started acting up about 2 weeks ago.... Took it in somewhere and they told me it looks like its time for a new transmission. The truck has a hard time shifting from 1st to 2nd some times... And the O/D light flashes once it starts shifting hard. Slips bad too.... I took it to another shop to get a 2nd opinion and he kept it over night and said that he cleared the codes and it wasn't acting up. He told me to take out my TS chip to see if that makes a difference. Is that even necessarily? If I leave it on stock doesn't that do the same thing? And he said even a burnt tail light in these fords can fry a transmission. I just don't want to spend the money on the transmission if its not broke. its a 2002 f250 7.3 4x4

[7.3550Duty]

Once your tranny starts to slip, you might as well figure on putting a new one in. Its the weakness in these trucks. Just step up to the plate, buy yourself a BTS, have a reputable shop in your area install, make sure they flush all your lines, cooler, and radiator, and if you can install a bigger trans cooler. After that you wont have anymore worries.

[Lifted02]

Originally Posted by 7.3550Duty

Once your tranny starts to slip, you might as well figure on putting a new one in. Its the weakness in these trucks. Just step up to the plate, buy yourself a BTS, have a reputable shop in your area install, make sure they flush all your lines, cooler, and radiator, and if you can install a bigger trans cooler. After that you wont have anymore worries.

Well its just weird cause it doesn't slip all the time..... Some times it shifts fine, Then the next it wont get out of 2nd.. Its like hit or miss? Makes me think it may be electronic somewhere... What you think?

[7.3550Duty]

Well take it to another shop and have them look at it and see what they say. It never hurts to get another opinion. It kinda sounds like your clutches are starting to fall apart and are running thru your tranny parts and just slowly going thru it all. Which isnt a good thing but i could be wrong to.