This bulletin applies to 2007-2014 Chevy Equinox vehicles. Technicians may diagnose the following two conditions on propeller shafts as concerns or issues:
1. The rear flange yoke on the propeller shaft may exhibit a “notchy” feeling in the U-joint as it is actuated. The technician should look for obvious looseness in the joint or seizure of the joint beyond the “notchy” feeling during joint actuation. This can wrongly be diagnosed as a brinelled bearing. These propeller shaft conditions that may appear to be product defects or durability issues are actually normal conditions.
2. The front CV joint has a vent in the center of the cap that may expel grease if the propeller shaft is heavily compressed at the front CV joint during service. This grease expulsion under these conditions is normal and does not cause any significant loss to the joint.