Just an update, running about a week without setting the DTC. I checked and it's been almost 8 weeks since between two DTC0483 codes. Temp gauge on dash is running between a couple ticks before 210 and straight up at 210. My android Torque App is reading 183-200 coolant temp and transmission is running 175-185. Reading are from in local, stop/start 80-90* F here in Atlanta w/AC always running cold even at idle. I'm keeping a close eye on things, anything else I can do besides changing the fan clutch at this time. Car has 73K mikes, w/dexcool, coolant is clean and level stays rock solid in reservoir. Clutch would be a DIY ( I do all my own work) and usually I don't like to spend money or time on something that is not broken .. My envoy is the newest in my stable at 6 years old, Mercury GM is 10, Chevy G20 Van is 18 and my Z28 is 19. Repair is almost a way of life..
QUESTION.. what scan tool(s) are you using that will provide actual and commanded fan speed data. I do my own OBD1 tuning, and logging. But do not have any OBD2 software yet. Seriously looking at the HP Tuners products for tuning and logging as a learn more about the I6 Vortec . Is there a good data logging/scanning package available in the interim ??? . Not a lot published on what some of the products can do. descriptions seem generic, w/o actual details. Any good tuning forums for the I6 ..been reading the HP one, but not a lot of our stuff in there..