I have a 2002 Jeep grand cherokee limited with a 4.7. The problem is after several attempts to fix what sounded like a lifter tick I shorted out the oil sender and blew the ASD fuse. I then changed out the ticking motor with a used one and now my tranny wont shift into 1st or overdrive. It did for about 20 miles after the engine swap and the stopped working. It drives fine and the tranny seems to be fine it just won't start out in 1st. It also has to be started in 2nd manually or it will start in drive. I have already replaced the TCM and it changed nothing. Could it be the PCM or could it need to be reprogrammed? I also traced all the wires from the TCM and they are all good. I do have a code p1698 and from what i've found out the tranny is in limp in mode.

OK thats totally different. Miscomunicatoin, I think. Then just like my dodge truck the solenoid package needs replaced. I have the exact same problem. I can downshift to low and it will start in second , but not first. If i leave it in drive it starts in third. This is just a worn out solenoid package. I am going to take mine out and see if I can find Orings, So I can repolace them all in the package. None of my solenoids are bad, Its just the seals that are bad. This might be your case also. But I would check fuses and the TPS,TRS first. Because this is part of what the TCM uses to control the shifting process. Also check you MAF, this si also part of the process, yet minor. OK thats totally different. Miscomunicatoin, I think. Then just like my dodge truck the solenoid package needs replaced. I have the exact same problem. I can downshift to low and it will start in second , but not first. If i leave it in drive it starts in third. This is just a worn out solenoid package. I am going to take mine out and see if I can find Orings, So I can repolace them all in the package. None of my solenoids are bad, Its just the seals that are bad. This might be your case also. But I would check fuses and the TPS,TRS first. Because this is part of what the TCM uses to control the shifting process. Also check you MAF, this si also part of the process, yet minor.