Q: why does the temp gauge not show the temp ? on 2000 Chevrolet Impala

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
when the cars running it has heat. after the car is off fans run?
(1) Answer
their are a set of ground wires on a nut under the exhaust manifold in the front of the engine, the one that holds the motor and trans together, you will need new eyelits and extend the wires to keep the tension off of them,splice the extension wires on and crimp the new eyelits on the ends of the wires, put the eyelits back on the stud and tighten the nut you removed earlier. also replace the temp sensor and the plug pigtail with a new pigtail, splice it it in and your done, no more fan running on, and temp hand not working. Heavy chevy 102.