My truck had the oil cooler lines fail at 44,****** mi, luckily i found the drops in the driveway before it was catastrophic. The dealer said not under power train warranty due to "not a moving part", so I bought the lines for 130.00. It is a pain and very messy, but not too bad. BTW lighter fluid removes oil stains without scrubbing.
first I removed the inner wheel liner on the passenger side, now i could see the connections to the cooler.
Upper is accessible from the top.
Be careful not to lose the clips, new lines reuse them
Then I disconnected the block at the oil filter adapter and sensor
The rubber lines in the middle do allow some movement, but not much, so I decided to remove the bumper for a direct shot.