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I have a 2008 lmm with 65000 miles on it. In the past week I've noticed the motor shakes when I turn it off. I can feel it in the cab. My last truck was a 06 lbz and it shaked a lot but that was like it for the 3 years I owned it. But with my truck now it just stated to. The other day it smelled like my serpentine belt was getting a little hot and I don't know if that has something to do with it too. Can someone help me out. Thanks.
 

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Diesel trucks do that
 

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Normal
 

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If it's excessive you'll know. It'll rip stuff off and you'll have big leaks like coolant. But you can look at your motor mounts and see if they are hammered and needing replaced or bolted
 

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Normal. And i love it!. Its all that power settling down 😁
 
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17:1 compression will do that... My 2012 with sometimes do that on shutdown as well
 

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You could loosen the belt and see if that makes a difference.

As stated above-- Diesels usually have more "shake" than gas vehicles.
 
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