'02 Dakota Sport, 4wd. Put it into 4wd this morning because it was snowing. It didn't seem to engage; the vehicle was more than a little unstable - it seemed to be the back wheels. Anyway, I noticed that the little yellow light was blinking, so I stopped, put it into park, switched it back to 2wd and then back to 4wd-hi. Still blinking. Switched it to 4wd-Lo. Still blinking. Put it back into 4wd-Hi and continued to my appointment, driving sloooowly. It seemed to handle a bit better after I kept my appointment and started up again, but the light is still blinking. This is the first time I've used the 4wd since I had the fluid and filter changed. Could there be a connection?