I just swapped my Getrag 3.06 out in favor of a Getrag 3.91 differential. I used the HP Tuner wheel change to modify the diff setting to 3.91 and entered the stock 28.01" tire size. I also did the Init and the gear change did take. Is there anything else that I should be changing in the TCM or ECM?
I am experiencing an issue when turning hard left, it feels like the clutches to not allow the inside wheel to spin freely so it clunks a little. It does not do this when turning right. My abs lights come on when this happens. I have no codes. I swapped out axles on the left side and I confirmed the tone ring looks good and the abs sensor is connected.