After I start up my 2005 CTS, the temp gauge stays at 'zero' (i.e. 'cold'/doesn't move). Not a huge deal as it slowly creeps up and after 3-4 minutes and/or a couple miles, to the midpoint and stays there.
I recently had my check engine light come on (P0430) but it went off (by itself) after a couple days. I could have sworn that previously the temp gauge 'popped' to the midpoint immediately after startup (funny how I can't remember even though I've had it for eight years). So that's my question, does your temp gauge 'pop' to the midpoint or climb over time? Just curious for my sanity and if it does 'pop' do you think it's an issue if mine does not?
Thanks, guys. This forum has been great over the years and it's much appreciated.