I am had the same Service 4WD and Parking brake automatically on in Park after shifting from Auto 4WD to 2 Hi. Took it to the Dealer where software updates were completed and functionally the problem seems to be resolved. The 4WD indicator in the instrument cluster continues to remain Orange and the Service 4WD message does appear upon start-up. I have a little over 28000 miles on the truck at this time and have had no issues up to this point. Taking back to the dealer in the morning for further service. Hoping that the issue can be resolved. In all of the reading I have done, it seems that this problem is somewhat common, but there is not any real definitive cause or resolution described. I am hoping that the issue can be resolved and prevented from happening again.
