2021Trailblazer RS AWD Scarlet Red Metallic
Same here. When it's cold out, idling will only warm up to 1/4; I need to drive to get it up to half. However, my TB always gets up to 1/2 after a few minutes of driving. I've seen other people on here (or maybe it was on the FB group) indicate that their vehicles NEVER hit 1/2 when it's cold. Perhaps they live in a colder climate (upstate NY here) but I've never had that issue.no, at least not sitting idle after startup. I do have to drive it a bit and it will eventually get to the half, but it does take a while.