One problem related to engine rattling and whining sounds has been reported for the 2004 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 GMC Yukon based on all problems reported for the 2004 Yukon.
Engine turn it self off while moving, doors lock it self, turn signals will not return after turning, then bright lights come on when selecting turn signals, loud rattling noise underneath the car; not sure what it could be.