[trularin]

I was the validation engineer for the SSR ( yes, I work the GM stuff ), anyway, Bosch was asked to supply fans for the truck. One they sent was a two speed high flow fan with 3800 CFM.

It took four or five tries to get a mount and frame that would work, but it really makes a difference in stop and go traffic.

Look at this from a different point of view, if it doesn't over heat while driving and only while sitting, then you have ttwo places to start:

1. The water pump is not turning fast enough to move the hot water.
2. There is not enough air moving across the radiator to cool the water.

If it was radiator size, it would over heat more often and in a variety of traffic.


I hope this helps.