The dealer ordered the parts needed, but STAR would not authorize the work. The dealer told me the response from STAR was that my CTD is a heavy duty work truck, and heavy duty trucks make heavy duty noises. I guess, rear end whine and howling is to be expected. If I really believed this, I'd call the Ghostbusters for repair. The howling is incredibility irritating at 45 to 55 mph. If this is the service I can expect with only 850 miles, I'm going to start looking at a Duramax or test drive several CTDs until I find one without the heavy duty howling. 
