Heating AC and Engine Cooling
Chevy Silverado
Chevy Suburban
Pontiac Montana

Where is the location of the cooling fan relay switch on 2004 Montana?

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April 06, 2010 6:00PM

There are 3 cooling fan relays located in the fuse box just above the battery, in the engine compartment. (passenger side, near the front of the car) You will have to take the fuse box cover off. The other side of the cover lists all relays. I think the radiator cooling fan motors are switched in series or in parallel depending on how much airflow is needed - hence the 3 relays.