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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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I have a 04 trailblazer thats running a little hot temp can

Customer Question

i have a 04 trailblazer thats running a little hot temp can get up to 235 (f) and the temp gauge goes passed the half way mark , ( use to stay always in the middle or just under) vehicle has new t-stat and new fan clucth i have checked the computer fan control wire pin 57 at ecm it will generate a 12volt pulse but if i check at fan connector the voltage is only pulsing about 1 to 2 volts sometimes less then a volt put a test light on it and you can see the light pulse really fast , tried a new relay and same results if i jump the relay fan kicks in and temp runs great , ohm the wires from comp to relay and from relay to fan connector all good
Submitted: 2 years ago.
Category: Chevy
Expert:  GM Tech (Cam) replied 2 years ago.

hi there, I am Cam. Does this ever set any codes?