Ok, here's an odd one for you guys. I recently took a trip of approximately 570 miles during which I encountered an issue with the tire pressure monitoring system. The Service TPMS warning came up on the DIC indicating some sort of failure (flashing TPMS light as well). I checked the appropriate screen to determine if any sensors were malfunctioning and sure enough the right rear sensor was showing the double dash. Didn't really think much of it and assumed a vehicle reset may fix it. Before I could really settle into that idea, though, a second warning popped up and now both rear wheel sensors stopped responding. So, assuming I would see if I could make OnStar earn some of the money I pay them, I contacted OnStar to ask about it. Naturally the nice lady I spoke with couldn't answer my question and the people she said that I should talk to were out of the office on holiday. Joy... Anyway, not long after hanging up with OnStar, the front passenger sensor stops responding. Now I'm down to one sensor. To make a long story short, by the end of the return trip only one sensor was showing offline, which I took as a potential overheating/temperature-related issue. My question to you guys is whether anyone has run into this. Of course I got the usual "could not reproduce" from the dealer when I took it in, but that didn't surprise me, nor do I fault the dealer in this case. GM doesn't play nice with dealerships and warranty claims when there is no evidence of a failure (computer diagnostics=pathetic excuse to refuse warranty claim) None of the sensors showed as failed by the time I took it in. Has anyone heard of these sensors overheating before? Facts to note here: '12 Cruze ECO w/ 6MT, average tire pressure was 43 psi, outside temp was 68F, no electronic modifications in the car, no tunes. Had a minor mishap with GM's answer to a spare tire, but since the "tire slime" is supposed to be compatible with the sensors, I figured this shouldn't have any bearing (a small amount of sealant may have gotten into the tires when I filled them prior to departure-long story...).