I have a 1998 K2500 Gmc with a 6.5 diesel, My problem is that I replaced the block heater because the one in it was not working and it worked fine for one night and then died. This has happened three more times in the last three weeks and I am starting to get frustrated. When they don't work I test them before pulling them out and they are really dead. Any help would be wonderful. A monkey could install these things so I know I am not messing up the install.
