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What do I need to get done before power train warranty goes out ?

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Well my 2010 GMC Sierra 1500 Crew 34k miles with 5.3 LC9, 6 speed Transmission, 4x4 Z71, cooling package, 3:42 gears is fixing to get out of it's power train warranty and wanting to get it ready to tow with. Looking at 6000lb trailer to buy. The truck has been a great one, but thought I might need to see what TSB Updates It might need.


So any Technical Service Bulletins and numbers that it might need ?


I thought about trading it in and upgrading to a new 2015 2500HD with 6.0 , 4:10, 4x4 crew long bed , but figured the gas mileage would go down to 12 mpg. I hope to be pulling the trailer about 600 miles month.



Any suggestions are greatly appreciated.



Thank you

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