Just got son's '01 Ram 2500 back from the transmission rebuild and have CEL. Truck ran fine on the 35 mile drive home from the tranny shop.

Codes are:
P0341 Camshaft Position Sensor Performance
P1693 Companion code

Local Cummins Service Center has the sensor (Part # 49215970) for $64
Service manual doesn't really give a good drawing of where it is located, even the drawing on Geno's garage isn't great, but from all the reading I have done, it's a real PITA to get to.

Anyone ever changed a Camshaft Position sensor? Tips or Tricks would be appreciated.