Originally Posted by primem

if you have a dual system; i have repair 2 of these trucks for leaks from the rear a/c lines. both leaks were from the tubing. it routes down from firewall above the trans housing and bends right to go around the fuel tank. At that point, the lines are somewhat exposed to throw-off from the front wheels and rocks punctured the lines.
the dealer has specialty tools that will allow for sectioning in a repair instead of replacing the entire line from the rear evaporator to just in front of firewall. The repaired section needs to be covered in loom to protect it from damage.