I'm so glad I stumbled across this thread thus morning. I pulled right over to have my truck checked out and wouldnt you know it? 4wd wipers. SMH, the garage put the correct 2wd wipers on, topped off my blinker fluid and rotated the air in my tires. Nice guy cut me a deal and said if I came back when my correct muffler bearings were in stock he would only charge me $3700 for both visits. Definitely going to recommend him.