The knob on my truck that adjusts the temperature stripped out so it wouldn’t catch and adjust the temperature every time. Sometimes it would work, sometimes not. Did some Googling and discovered this was pretty common for my year so found a YouTube video on how to remove and replace the control panel. Whole thing cost me $30 and about 30 minutes of my time. Was looking at close to $250 at the dealer, so well worth my time and effort to do it myself.