I had antifreeze dripping off the back of my engine by the oil filter. I took it in for service and the dealer replaced the water pump, pressure tested and gave me my truck back. I started to smell antifreeze again in about 3 days and noticed it was wet by the oil filter again. I power washed the bottom of the engine and removed all the old residue. Now the antifreeze is back by the oil filter again. It is a small leak but needs to be fixed. Has anyone had a water pump replaced yet? I also was curious where it was located to be dripping from the back?