Driving in 4WD by mistake all summer
I have accidentally been driving my 2003 Jeep Grand Cherokee Laredo in full-time 4WD all summer. It was making strange noises- some of the time, until a friend got in to drive it and noticed it was in 4WD. I've taken it to a local shop TWICE, and they didn't say anything about it, but couldn't find anything wrong with it, or what was making the noises. It now seems to be running fine, with 197,000 miles on it. What are the possible ramifications of this? Have I ruined any particular part of my beloved Jeep?