Originally Posted by mastercraftka
I just threw a P0128 code, but My gauge in Looks like it is running about 200 F. Can I still have a bad thermostat?
Also I see on youtube lots of LLY videos but none for the LML is it the same??
Basically all the same.
Most likely your truck doesn’t meet the calibrated target temperatures. Do you have the capability to freeze frame when code is set?