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I'm reading my silverado book and it says this
If the vibrations occurs at the same engine speed(rpm) regardless of which gear the transmission is in , the driveshaft is NOT at fault since the driveshaft speed varies.
Is the truck 4WD ?
55 Shudder or vibration during acceleration
1.excessive toe-in have alignment checked
2.Incorrect spring heights
3.worn or damaged inboard or outboard cv joints
4.sticking or inboard cv joint assembly
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