We just purchased an 03' Limited V8, yadda yadda yadda. Last night, I put it into "D" and the little display told me I was in "4". After driving for a while, I realized I was in "4" due to the engine braking. I stopped and shifted down through the gears. Interestingly, the tranny wouldnt shift into "2", it would just go straight into "L". Anyone had this problem? What would cause it? Thanks in advance.