electrical problem transmission flaring?

[Lean Machine]

I currently seem to be having a similar issue with my 2005 H2. I seem to have developed electrical problem since I had the battery changed a few weeks ago. I've had multiple problems (blown ignition fuse, replaced ignition, etc.) The only remaining problem is the transmission. Initially after getting the battery changed, the transmission would skip 1st gear and go straight into 2nd gear. No issue moving from 2nd gear to 3rd gear, etc. A few days later the battery was disconnected again so another shop could work on the after market alarm system. When I got the rig back the transmission starts in 1st gear but doesn't shift from 2nd to 3rd gear. RPM surge between 2nd gear and 3rd, but doesn't return to normal until tranny moves to 4th gear. Current shop says the transmission needs to be replaced, but I don't believe this is all a coincidence that the transmission went bad the same day I had the battery changed. This thread was a little dated. Any updates if you've had similar issues?
Thank you