temperature sensor

first post have searched for answer. not found anything yet. 1.compass shows wrong directions 2.no temp reading. I have read manuel, have reset region number (11 for me), but no luck. any sugesations will be appreciated.:cry::cry:

The temp gauge on my 04 TB quit working about a year ago. I have been told I would have to replace the entire instrument cluster at great cost. Is there a temp sensor that could have gone out and can be replaced without replacing entire cluster? Any help much appreciated! :)

Recently got an 04 trailblazer ls, 104k miles, and noticed the temperature gauge is going way past 260 degrees. I hooked an obII code reader up and its saying the temperature is 185. I have no idea whats going on, or even where to start. Everything else seems to be working fine, i know the truck...

Lots of thanks to the TB forum for info and confidence to have at the TB repairs--gauge motors, blower controller, ... Latest adventure was replacing the ignition switch--Passlock light blinked once and that was enough to decide to replace before being stranded. Replacement went well enough...

First this is my first post, please forgive me if I use laymen terms whereas I am not a mechanic. I got a DOCII P0128 Error 2 weeks ago, it cleared and re-popped about a week later. For a 2004 Trailblazer 4.2 this code points to temperature problems related to the thermostat or ECT (Engine...