Avalanche Cooling Fan

GM 3 Relay Low/High Cooling Fan Explanation/Diagnosis/Testing - Chevy Venture

Avalanche Cooling Fan

I have had a lot of people ask me about GM Radiator cooling fan diagnosis in the past. It basically runs two fans in series for low speed and then put's each on it's own 12V circuit for high speed. It is a bit confusing till you understand what is going on. I hope this video will help folks th...

Tags: cooling fan relay,fan relay,cooling fan,radiato...