GMC Troubleshooting Questions? Ask a Mechanic for Answers
hi, have you checked or changed the spark plugs ?
also, have you checked the dist cap .?
but this runs ok in drive ?
or does it run kind of bad in drive .
I think you are getting the vibration or shake from the motor not front end things ?
have you checked the spark plugs or had a compression test done on the cylinders ?
checked the dist cap or checked the spark at each spark plug ?
Do you still need help ?