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What makes the engine cooling fan not work at high speed on a 2001 GMC Jimmy?
Wiki User
∙ 17y ago
There is no need for the fan to run while traveling at highway speed. There is plenty of air flowing through the radiator at high speeds to keep the system cool. The only time it will work at highway speeds is when the A/C is on.
Wiki User
∙ 17y ago
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