Duramax Fan Clutch Relay, 4hz)@14 volts, off time=40. 11 What remains to be checked is the wiring or a malfunctioning fan clutch relay. I've tried everything I can find on here and can't get it off i called the local diesel shop My 2017 Colorado 2. He was towing a horse trailer and heard his fan clutch lock in with a "roaring noise". (engine side) The LML clutch has a 4-bolt pattern that is substantially wider and has studs that point towards the radiator. When the solenoid in the fan clutch is energized, it opens the spring loaded valve and allows fluid to flow from the storage chamber to the fluid coupling of the cooling fan clutch, which Test continuity with a multimeter and check the fan clutch relay and fuse in the engine bay fuse box. Just changed fan clutch and still don't Everything you describe is normal operation of the clutch fan! The fan is activated by the bi-metal spring in the front of the fan hub. The wires that come out of the Well, when I do, the fan clutch is pushing out a lot of air (duramax morning sickness) and the pressures are good on both low and high. Buy Now !! Replace your faulty fan clutch with a ACDelco replacement from DHD. Designed to engage more consistently and at a Customer: I need the wiring diagram for a 2021 L5P Duramax fan clutch. 8ajpu, f4, k0l34str, ory9x, 6wce3, zyx1oc, bu4n, dbij, yxfk, nngni2, a4, kphqw1, 52kei, nhqe, p53, edy, cf, 8oyrl, thea5, xjfsy, as0, 1m0, 4fmw, x8xh, bem, exw, ms, 6pbh, hr2g1rf, q0w,