I am not sure what "Options - Test High Gear in Highway Mode Spark" is for? Mine is unchecked and HiWay Lean cruise works fine.

Setting HiWay mode spark adds timing when in HiWay Lean Cruise,...

Onto the next ESC Done patch in the Zip package. Since we already know how to use the program and command prompt I'll leave pictures out. Procedure is the same just differant files.

Copy your bin...

There's been some interest in the Highway Lean Cruise for the 1227747 ECM so I figured I do a how to.

From the factory the 1227747 ECM had a highway lean cruise option but GM had to turn it off...