I wonder if someone would point me in the general direction to find the
oil pressure sender on a 2001 2500 diesel. I just don't see it.

My problem is the gauge runs fine, then will suddenly drop to zero and
check gauges comes on. If i immediately shut the truck off and restart
the pressure returns to normal, then it will drop to zero again in a few
minutes (quickly, like you turned off the electricity). I figure it's
the sender and can replace that myself, if I can only find it!!

Thanks!
 Gladys.