Hi everyone, long time lurker first time posting. I have a 04 trailblazer ext with 4.2 that was given to us just over 2 years ago so unfortunately I dont know much of the history. The problem is its running hot (230 degrees if I let it) and I think I've got it narrowed down to the EV fan clutch. I've replaced the water pump and thermostat with acdelco, new coolant sensor, flushed radiator, and finally new clutch. The fan clutch was a no name brand which I realize now is not recomended. I believe its working but only for the first 15 minutes of driving. I've done the grab the fan and stop it, checking for a pulse(it does) I can jump the white wire with 12 volts and it engages hard, same with jumping the relay from the 5 to 6 pin I believe. when it starts climbing up in temp it doesnt seem like the clutch is engaged hardly if at all? When I shut the engine off I'll watch the blades and it appears to spin 2 full revolutions, I'll check the blades in 5 mins by spinning by hand and I'll get 1 revolution. If i wait an hour half a revolution as if the cooler it gets the more engaged it becomes. Sooooooo all that explaining to ask is this just a junk fan clutch or do I have a problem with a relay? (swapped 45 and 46 too) Problem with PCM? what other "checks can I do" TIA