Hi ya'll I'm new on here and new to the duramax world. Bought a 09 lmm down in texas when I was visiting family over the holidays. It has 140xxx miles, and is all stock. The problem i'm getting is when I'm at slower speeds (25-40) it seems like it can't find the correct gear. It is not throwing any codes and runs fine on the highway and it did great pulling a Passat tdi back from texas on the trip home. I saw where someone had this problem but cannot re-locate the thread. Any input would be greatly appreciated!!!