Why does my chevy 3500 overheat while pulling a trailer

1989 CHEVROLET TRUCK
30,000 MILES
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R WATKINS
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  • 1 POST
Flushed radiator, Replaced thermostat, heat sensor, and clutch fan
Jun 27, 2012 at 8:44 PM
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RASMATAZ
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  • 75,992 POSTS
Have the transmission checked-could be slipping and also the transmission cooler for clogging-
Jun 27, 2012 at 8:52 PM