Njtrucker

Hi I'm new to this site but lost and wanted to see if someone could help me out, I have an 2002 Lexus LX470 and I'm having an issue with the transmission, it won't shift to 3&4th gear, 1st & 2nd is good with no slipping but won't shift to 3 & 4, I have an snapon solus scanner but that's not helping as it's not putting a CEL light, with the scanner it's supposed to give me an option to manually shift the gears but it only allows 1 & 2 shifts, I don't want to go pulling the trans if it's an shift solenoid so any help would be greatly appreciated