Lets get this LS 5.3 running!

[biketopia]

Originally Posted by kipps

Biketopia is seeing the flat connector beside the oil pressure sensor. On the gen-3 engines, this is the cam sensor. On gen-4 engines, the AFM solenoid connector is in the same location, and looks very similar. The confusion is understandable.

The best way to identify the gen-3/gen-4 difference when looking at that part of the engine -- the gen-3 oil sensor screws into the block, while the gen-4 oil sensor screws into the valley pan cover.

The gen-4 engines moved the cam sensor to the timing cover.

Yup you got me! I quickly glanced at the pictures and moved right past it, I deal with a bunch of gen 4 stuff at work so forget about the subtle differences on the gen 3 stuff.

But OP, seems like everyone has got you steered in the right direction, I also learned a thing or two with the range selector switch not being needed.