do you have access to a scangauge? so at least when its operating temp (i'm predicting 70 degrees C or 158F?) it starts shutting down the engine when you let off the gas? i could live with that but then I don't want to regen... so if i were to slap it into N then it would still auto stop or would actually revive the engine? If thats the case then that sucks a lot of balls, because i want to coast and use the Tahoe's big momentum of 5600 lbs dammit!!!! But yeah like you said no way to determine SOC... because if SOC is low then engine is more tempted to turn on quicker. (I guess a plus for the aspen/durango hybrids that DO have a SOC display).
Oh and I was curious is there any regen in N? If that's not the case then the economy meter would swing all the way to the left if you were to brake in N?
I wonder if you had the engine block heater, how much would that preheat the engine to? and of course the wattage it eats because i don't want to blow any fuses!
lol thanks for the answers tijbbari your doing this man a big favor

i got around 20 km a liter when i drove a civic 5 spd using advanced hypermiler techniques
and now I drive a salvage nwh20 prius that gets almost to 25 km/l with 195,000 km to date. (retired)
1997 BMW 318IS with m44 engine (1.9 liters > 130 horsepower on 91 octane, capable of 30 mpg highway)