A few days ago my wife left she called back said the speedo, tach, and PRND321 indicator lights wasn't working I told her to come back and I would look at it. When she got back she said when she went to pull out that it felt like the brake was stuck. I checked some fuses, fluid, ect found nothing obvious. I started the truck and everything was working I drove it and it drove fine. She went on to visit her family with no issues. It's been 4 days and approximately 200 miles later then last night the transmission slipped a little or the RPM's went higher than they should and it wasn't a smooth transition either going into 3rd or 4th. I had it hooked up to a computer and the codes were P0740, P0753, P0758, P0785, and P01860 all transmission codes. The transmission was rebuilt about 6 months ago but of course the warrant has expired. I know multiple transmission codes can mean it's the ignition but would that also cause or allow it to slip. Any ideas of what I should try to replace first?
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