Ding, Ding, Ding! I hear, As I look down to see the "check engine" light is on
and the temp guage is flatlined. I also checked the temp through the ECM thingy in the dash , and that read ---. I'm thinking the sensor. The other thing I noticed was that the remote start did not operate when the check engine light is on. Has anybody else have this issue and was the sensor the problem ?

Victor

 

Bad or stuck open Thermostat, do a search here. Much posted about this.. Same symptoms.

edit: Read this: https://www.chevyhhr.net/forums/show...ght=thermostat

 

X2.......... Thermostat.

 

If your vehicle is under 100,000 miles, take it to a dealership as its a powertrain warranty replacement. At least, mine was, and I didn't think it was..

 

Victor- Read this "How To", if you have no warranty

https://www.chevyhhr.net/forums/how-tutorial-library-21/how-save-%24350-00-thermostat-replacement-2-4l-p0128-24493/

 

Check your coolant level too. I was hearing a rush of water sound inside the car on start up. Coolant was very low, filled. Problem hasnt returned 08 2LT 28k.

 

It had to go somewhere, mayne.

 

Thank's guys,
Still covered, It will be dropped off in the morning.
Victor