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Discussion Starter #1
I just finished installing a 5/7 drop kit from DJM on my '97 dually crew cab and have a very slight vibration in the driveline when slowly accelerating between 5 and 10 mph... It's not bad at all, but I was wondering if this is common... Anyone have much experience with these big trucks?
 

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GMFS slowest truck :read:
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is that the only speeds you have it? i would guess driveline vibes...but if its only at that low speed, i doubt id worry about it. you may need to shim the pinion a hair tho.
 
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