Experiencing a ticking or light ratcheting noise coming from the drivers side when above 65mph. Do not notice it at lower speeds. Have changed the IWE check valve and solenoid which did not solve the issue. Sound remains when shifting to 4WD auto. Sound doesn’t not change under acceleration and it sometimes is intermittent but mostly continuous above 70-75mph. Any ideas what this could be? No issues with loss of power or anything else noticeable. Exhaust leak? Wheel hub issue? Something else?