2004 trailblazer the check gauges light came on and temp went to 0 on 2004 Chevrolet Trailblazer

Is this a temp sensor or thermostat causing this? I took the temp at the housing and it reads 220 then took the temp at the sensor and it reads 190 this is with the engine hot but turned off. the gauge went to 0 and the check gauges light is on.

by in Centerburg, OH on July 30, 2014
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer
ANSWER by , July 30, 2014
Scanner live data reading for the CTS is??