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Old 09-18-2017, 08:53 PM
Dick Boneske's Avatar
Dick Boneske Dick Boneske is offline
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Join Date: Mar 2004
Location: Winneconne, Wisconsin
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Default Car Shudders When Stopping--2008 GP GXP V8

My GXP that I just bought shudders when stopping. At about 20 mph, the car shudders as though the transmission isn't shifting down--similar to the old Roto-Hydramatics when the linkage wasn't set right.

The problem goes away if I shift to neutral before stopping or if I enter the Slapshift mode so the car is in first gear when stopping.

Does anyone have suggestions on a fix--vacuum modulator, adjustment, etc.?
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