[Tom12]

On my drive to work this morning the coolant gauge was pegged at cold the whole drive around 50 miles. Everything was running fine from what I could tell. I did turn on the heat and it wasn’t as hot as normal, I also checked when I got to work and everything felt normal under the hood the area around the engine felt normal, warm but not hot

 

[Tom12]

Thermostat locked to open Position you will get a Engine code P0128 this happened to me and calls for thermostat change View attachment 1549 View attachment 1549

Took it to the dealership and they said the temp sensor had shorted and was replaced. We're a month down the line since they fixed it and it happened again...

 

[Tom12]

I’m still having the same issue regularly now. I’ve had the CEL come up once, supposedly it shows after the same code shows up 3 times. I’ve taken it back to the dealer to fix, and they always shrug their shoulders saying they can’t figure out what’s wrong. V6 blazer has the Chevy LGX engine that’s also in the camero’s, from what I can find online they have the same problem. Clearing the codes sometimes makes it go away, and sometimes it just goes away by itself