My temp gauge hits just below mid point at about 185 degrees, then stops moving. At 225 degrees it's in the same position. The fact that my OBD scanner reads the temperature above where the gauge stops responding makes me think the sending unit must be working....it must be a bad gauge. Sound correct?

Can anyone offer any pointers/tips for replacing it? Not sure how the instrument cluster comes apart.

 

I would not assume the temp sender is operating correctly, it may have a bad connection at the instrument panel. Check the wiring and connectors.

Also keep in mind the dash temp gauge is NOT accurate. It is basically and idiot light with a needle.

The instrument cluster is one part, the whole thing including the temp gauge.

Good luck.

 

Thanks. How do you get the panel out? I may need to test the gauge. Guess I also need to find the temp sender...can anyone point me to it?

 

My '09 H3T, ODB readout 212 but instrument is sitting at the mid mark or just below.
Did you ever get any info on removing the instrument cluster?

 

100% normal.

 

195 - 225 i think is operating temp for the 5.3 but being the needle just sits at the mid make, I don't want to be surprised and have it go red light on me without warring.

 

Mine sits at the same spot, just below midpoint from 180 to 230+ degrees with no change. That's not normal.

I've not received any input on how the dash comes apart.

 

My old Avalanche temp gauge worked fine, It's just a crap gauge on our H3's. I suppose I'll get bored one day and figure it out but for now I have too many things going one.

 

You can take the dash apart to replace the gauge, only to realize it's normal, if you'd like. Sounds like a fun way to spend a Saturday. You can also leave the dash alone, get a ScanGauge (with X-Gauge) for about $100, plug it into your OBD port, spend ten minutes programming it, and know the exact temperature of your coolant, transmission fluid, engine oil, etc. I get the impression you like taking stuff apart. I say go for it and let us know how it works out.

https://www.scangauge.com/support/x-gauge-commands/gm/

 

Alpha X your right I like taking things apart but I’ve got my hands full so ScanGauge is the better way to go