GMC Troubleshooting Questions? Ask a Mechanic for Answers
does the shop feel this vibration also ?
it is just at idle ?
that is a tough one to narrow down
off idle it is fine i mean in park off idle its fine ?
and they are sure the motor mounts and transmission mounts are not ripped at all and not grounding out so to say on any of those mounts and they are tight ?
will it vibrate with the torque converter unbolted off the flexplate ?
do they have a vibration analyze ?