Forum Discussion
2001400ex
Jun 24, 2017Explorer
I have never pulled Ike, but I have pulled long mountain passes up to 8,000 feet. I lock it into one gear, usually in 4th on 55 mph passes and 5th on 65mph passes. On diesels, The EGTs are lower at 2,800 RPMs in 4th than 1,900 RPMs in 5th. Even tho my Duramax is tuned, it still doesn't downshift early enough, so I put it in 5th just as I'm coming into the pass then in 4th if needed. I kinda have a routine in the passes I drive frequently. But I do like to go the speed limit so that's usually what I keep it at.
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