2002 sonoma 0751 and 1860 codes

2002 sonoma 2.2 ltr,this is my sons truck and he just had a trany swap(junk yard trany) and I dont know if these codes where here before (0751 and 1860), but they are now. the 1860 came up twice. i cant find anything on the codes or how to fix the problems. It does not like to go into over drive,(surges back and forth from drive to over drive.) only thing i know is both have to do with a solenoid. any help would be a blessing.

P0751 indicates a circuit problem in shift solenoid "A" or the solenoid is stuck off. P1860 indicates a problem in the TCC solenoid circuit. DTC's must be diagnosed and repaired in the order they appear when they are retrieved. After the repair, clear the DTC's and road test to verify the repair. If any codes show up on the road test, diagnose & repair them.