2008 Tahoe Hybrid just turned over 88,000 and things are beginning to happen. First was a new water pump at 85,000. Then came a manifold that sits between the heads plus two manifold gaskets and an oil pressure sensor. Then came a set of plugs because it was beginning to idle rough and stumble on initial acceleration. Then the door lock actuators on the left driver and passenger side doors. Then the actuator that directs the air through the ceiling vents for the HVAC. Before that we had zero problems with it. $2,200.00+ in less than a month. Has anyone else had this kind of issues with their Hybrids? I am beginning to think it is time to trade?