Ensuring your coolant temperature sensor is functional feels like a no-brainer. Here are a few tell-tale signs that your ECT sensor might be bad. Your check engine light is on ...

GM To Fix 2024 Cadillac Lyriq For HVAC Coolant Sensor Harness Issue . By Jonathan Lopez. November 12, 2023 2:31 am . ... GM estimates that 557 units will require replacement parts.

GM has issued a TSB to address an issue with the engine coolant pipe on certain Chevy Blazer, GMC Acadia, Cadillac XT4 and Cadillac XT5 crossover models.