Hey guys, i have a 96 k1500 4x4 with the 5.7. When i got the truck it had the b&m racing shift plus installed. Recently only when i am in 4hi after going thru first gear it almost seems like it goes right into overdrive and bogs down the engine. I have the shift settings on the shift plus set to off its just strange how it only.does it in 4hi. The tranny is relativly new also.