jay loukakis

has never overheated, yesterday evening the temp. gauge has stopped working, does not show temp.??? checked the factory does not show a fuse for the gauge???

whopper

Thermostat? Does the digital display show "-- --" for the temp? If it is the thermostat sticking open, it will eventually throw a P0128 code and disable the A/C at the same time. And the condition will be intermittent.

jay loukakis

it is showing code p 0128, my mech. wants $175.00 labor plus parts.

jay loukakis

I have tried to find someone posted on changeing the thermostat but cannot find it???

ChevyM84

What year is the HHR and how many miles???

ChevyM84

and if its not under warranty......... https://www.chevyhhr.net/forums/how-tutorial-library-21/how-save-%24350-00-thermostat-replacement-2-4l-p0128-24493/

jay loukakis

2006 2lt 60,246 miles

jay loukakis

Took my HHR to my mech. the temp. started working, mentioned about the temp. sensor he saud no-way, his mech. did some testing said it was the sensor, the part will be in an hour parts for the sensor and labor $100.00 6thanks to this forum, all the answers are here.

ChevyMgr

Jay if that doesn't fix it put a thermostat in it.

whopper

$0.37 says it's the thermostat. But do keep us posted. Good luck.