From 1998 till somewhere around 2004 GM fuel senders were 40 ohms empty and 250 ohms full. Then they reversed it to 40 ohms full - 250 ohms empty.

I swapped a 2012 L94 6.2L into an older rig. The L94 ECM--E38-- has a 2011 OS on it for various reasons. Here's my problem: The fuel sender reads 40 ohms empty and 250 ohms full; that's reversed from the 250 empty normally seen after 2004. I can see how to calibrate it in HPtuners, but will the reversed fuel level curve be compatible with the ECM? Or will the curve being reversed cause problems?

Thanks!!