Cooling fan on 2001 Pontiac Montana

I've changed the thermostat,cooling fan relays and cooling temp sensor. But,still the cooling fans only works when the a/c is turn ON, otherwise it the temp. gauge goose higher than normal. What can possibly be the problem?

by in Lagrange, GA on June 24, 2011
1 answer
ANSWER by on June 27, 2011
It's a complicated system and I can't give you a good answer without inspecting the car myself. Get it checked ASAP so you don't damage your engine by overheating. If you want to find a GM specialist, here's our directory link for you:
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