I'd stay away from these. On my 01' 5.3, of course you realize you'll have to remove the entire intake and fuel rail to get to these. Don't forget the blue RTV either to prevent future wear. Its a bit of work to get to where they are and there are a couple of other items in the area that you may want to pay attention to if the knock sensor need attention. If you look at what came stock(AC delco sensors and harness) and the price difference, I was told not to waste/risk the time on made in China sensors for our GM truck. Either they fail early or misinterpret. I never had any issue with AC Delco parts I'll pay a few bucks extra for all the hard to reach, and other inacessable sensors in this area, new oil pressure switch, clean some engine grounds up, pressure cleaned fuel injectors, and the intake with B12, throttle body hand cleaned. etc so while doing all that didn't want cheap parts to cause me to have to do all that rework in order to save $40. Especially since the original issue is moisture related to that harness and sensor wiring. I wouldn't want anything to fail within a couple of years because of cheap Korean parts. I did mine to get rid of knock code on my MIL about 5 months back.
