- Mar 13, 2013
- 9
My 2003, 4.2l envoy seems to be having issues. Reduced power, lower mpg, and the temperature gauge is reading at 1-2 ticks above the 210 mark whereas all the years I have owned this vehicle, it always read at 1 tick below 210. Last year I replaced the fan clutch and water pump and about 40K miles ago I replaced the thermostat. I am thinking the thermostat probably needs to be replaced again. I have read about folks needing to have the PCM flashed for a fan clutch update but I feel like my fan clutch is working properly, roars at start for maybe 5-10 seconds and idles down after. Does this sound like a bad thermostat to you guys?
I have switched the headlight relay and the fan clutch relay to eliminate the possibility of a faulty fuse. I have also made sure there is no air in the coolant system. Thanks for any help
I have switched the headlight relay and the fan clutch relay to eliminate the possibility of a faulty fuse. I have also made sure there is no air in the coolant system. Thanks for any help