I have a 2001 Suburban 1500 RWD Base Model. In the past I added the factory locking differential, transmission oil cooler and 5000 pound trailer hitch receiver/wiring. The vehicle is in great shape. I would now like to find out what the OEM parts to add the engine oil cooler to this. I could use aftermarket, but would like to see if I can find the original parts albeit used.
David

 

I would not worry about cooling engine oil on a street vehicle. Radiator upgrade to a towing one is more important as it will keep engine temps where they should be. Between trans cooling and coolant cooling you will be fine.