Hi everyone, I recently picked up a 99 GMC Suburban k1500. She has just over 122000 miles. Overall she's in really good condition. The driver seat is a little warn out, everything else looks like new. The rear view mirror reads the temp but it's not correct. Any idea on how to fix this? I am not sure if the thermostat is stuck open. Temp runs right around 160 degrees. The service engine soon light came on today. I had the code read at autozone. It's the oxygen sensor. I'll be replacing it tomorrow. I also noticed the light on the 4x4 button doesn't work all the time. I am not sure if this is normal or not. It feels like the 4x4 works just the yellow light doesn't stay lit. I have the flip down tv with the VHS player under the seat. Does anyone know if I can swap the VHS player out with a DVD player? I'm adding sea foam tomorrow. Is there anything you guys recommend I do? It's an amazing truck and I'd like to keep her as long as possible.