Hello everyone I have a 2001 chevy venture warner brothers edition (don't know if that matters) has had a bad shake coming from the passenger front only while under acceleration from 40 up to 75. Today it was driving along and went into limp mode(I'm guessing). It felt like it's shifting but won't accelerate and won't get up to speed. I shut it off let it sit for 5-10 minutes and does its normal for 2-3 miles then back to the limp mode. Any suggestions would be greatly appreciated

 

Hi.
Check engine and transaxle mounts, and ball joints. Perhaps you have any shimmy problem is in the sweet spot for bad ball joints, or control arm bushings , and these had a terrible design on the control arms.