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New guy here from Houston Tx.


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I recently bought my first 2500hd gasoline, 2011 GMC Sierra Z71 4x4 SLE with 88k miles and I have lots of questions and need the best bang for my buck on accessories. But most important is I'm almost at 100k miles and need some feedback on when to flush the transmission fluid and how often to flush the front and rear differentials. I don't off-road but once a week i go to the atv park and park close to the beach on the sand. Thanks in advance!

 

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Posted

Do you have the owner's manual? A lot of what you ask is in there.

 

I think I remember the typical trans service is around 100k, severe service is 50k, and it's just a pan drop.

 

Differentials easy, they have drain plugs. I asked this question a few weeks ago, because there is no specified interval in the owner's manual.

 

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