99Yukon4x4
Member
195K on her, and I believe the head gaskets are starting to fail. Noticed yesterday that I had no heat in cab, so changed thermostat, and filled coolant. Was driving around last night, and no problems. Drove around today, and noticed my temp gauge was going between 120 & 240. Checked coolant level, and was low, check oil, and oil level was above what it was a few weeks ago, and smelled coolant coming from exhaust while running.