I notice that the original post didn't mention what engine and transmission he had in the mini van. I'm tow rated at 3500 lbs in a GMC Terrain with a V6 and a manual/automatic 6 speed transmission. I live in Arizona and go into the mountains regularly. It's just a matter of selecting the proper gear in manual mode when the cruise control will not hold anymore. I'm also considering one of the trailmanor 24xx or 27xx models.
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