they were originally on my truck when i bought it i do not know what they came off of but they are a gm part number i just can't figure out for what. The reason i took them off the truck is i am really picky about looks and they did not look stock so i changed the radiator and fans to stock truck e-fans. But originally in NC heat the worked good, kept the truck about 200 or so on a 180 thermostat
Last edited by rlmclaughlin; 12-03-2010 at 08:08 PM.
2004 Chevy Tahoe, 5.3L bifuel, runs on both gas and propane.
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