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Neal, Mechanic
Category: Car
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Experience:  Auto repair pro and Mechanic on multiple makes.
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1990 GMC: travel pull in drive or overdrive

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We have a 1990 GMC 1500 and would like to pull a travel trailer - 24ft - what is the maximum safe weight as to not put a strain on the transmission, etc. and should one pull in drive or overdrive

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A reasonable tow capacity for that truck is about 7500 pounds. You should not tow in od but a lot of people do and you can if you are careful and only put it in od once you are up to cruising speed.

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