The same day that we hauled our Tahoe to the mechanic to have its fuel pump replaced, the starter on my 1977 Jeep Wagoneer started making a horrible screeching / grinding sound when I started the engine. I immediately assumed that the nose gear from the starter wasn't retracting back into the starter after the engine started running. I had replaced this starter 12 years (8000 miles) earlier, and the new one had a lifetime warranty, so I expected this would be a free, one-hour fix. I should know better by now.