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1st -2nd gear shift error
I have an 01 7.3 w/ just under 96k miles. A couple of weeks ago it started shifting funny. From a start I have to get it up to about 3000 rpm and then let off to get it to shift. When it shifts it does so very hard, after that it runs fine untill I stop and start again. So I decided a filter and fluid change might be in order. I bought this truck used and after having the pan off I don't think the tranns had ever been serviced before, lots of material on the magnet. After the filter change and new fluid, no change in the shifting. I read a post about the shift lever an overdrive button problems. So I checked and sure enough the wires were cut, so I replaced the shift lever still no change. So after that I have the OD light flashing after a few minutes of driving. Pulled the codes and got the 1st -2nd gear shift error and a 2nd gear ratio error. I also have a Bully Dog Triple Dog programmer. I put the truck back to stock and still no change.
Am I looking at a rebuild or a new tranny?
Also could the Bully Dog be the problem, should I get rid of it?