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Old 01-22-2010, 01:46 AM
Easy Ed Easy Ed is offline
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Join Date: Oct 2003
Posts: 1,118
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Default Re: I'm such a HUMMER NEWB!

Out of the 2003 owners Manual


Driving in the 4HI Lock or 4LO Lock positions
for a long time on dry or wet pavement could
shorten the life of your vehicle’s drivetrain
and tires.

I think the key phrase is "long time", if it was a short distance/time I would not worry about it.
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