94 GC limping

94 GC going into limp mode intermittently. Already replaced the solenoid pack and both input and output speed sensors. How often do the transmission control modules fail in these things? I want to try a different one but don't want to throw money at it. Has 50,000 miles on reman chrysler tranny. I put ATF+4 in it on both of the fluid changes I did. From what I've been reading on some forums, it is okay to use the +4 in almost all of the chrysler transmissions. True? Any ideas very helpful.

Check the input and output speed sensor pigtails. This was a known problem on these trannys early on and would cause your symptoms.

Most of what I've read on ATF-4 says yes you should use it in all cases where it calls for either ATF-3 or-4. Try calling 3-4 dealerships and see if they agree.