Where is the Check Engine light on a GMC?
Where is the Check Engine light on a GMC? Start the vehicle and verify that the check-engine light no longer is on. The location of the hood release under the dashboard and the hood release under the hood varies by GMC make and model. Consult your owner's manual if you have trouble finding them. The vehicle should always be turned off when working with the battery. How to reset the service engine soon light on GMC cars? How to Reset the "Service Engine Soon" Light on a 1998 GMC. Open the hood of the GMC and loosen the retaining nut...