[bigrichard]

I've got a 94 1500 4X4 that has recently developed some tranny issues. 1st problem is it won't shift into second gear automatically or manually(using the column shifter). If I wind it up to about 4k and take my foot off of the throttle it then shifts to drive. I am thinking it may be the shift solenoid but I poured some lucas in it to loosen things up and it didn't help at all. The second problem is when it is in overdrive it shifts back and forth between drive and od and will not stay in one gear even on flat land. The rpm fluctuates by about 800 when it does this. The tranny is relatively new with only about 45k on it and these problems both developed overnight and simultaneously without warning. I can still drive it around and it works fine but I just can't use 2nd or od. I pulled the pan and there is a very small amount of metal on the magnet so I know the clutches are not worn out as I have never changed the fluid since being rebuilt. Is there anyway I can test the shift solenoid? Any ideas would be very much appreciated before I have it rebuilt.