Q: check coolant light keeps coming on on 2005 Cadillac DeVille

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
coolant level checked-found to be okay light keeps coming on
(2) Answers
| |
The coolant level sensor is in the coolant reservoir and is a fairly high-failure item. Temporarily unplug the sensor and see if the light goes out. If it does and comes on when connected and with the reservoir full, I would bet on the sensor. Unfortunately, I think you have to buy the reservoir to get the sensor.
Tank assembly at GM $ouch.
Tank assembly at eBay: about $125
GM will NOT sell you the sensor.
Some folks reported success with the $20 FLS16 Coolant Level Sensor (about $13 on eBay ). The FLS16 sensor is reported to be slightly longer requiring more care when reconnecting the harness plug.