My girlfriend drives an '06 Tahoe. On the dash display, you can flip through a few different things and eventually it'll show you the average MPG.
My question is, how is this measured? My 2000 Saab has the same thing, but I can reset it at will, and then it'll figure MPG from the last reset. So far, I haven't figured out a way to reset it on the Tahoe. So from which point it's determining MPG?? Since new? Since the last startup? Since the last fill up? Since the last reset of the trip meter?
Overall, I don't really like the computer in that thing. The "driving range" view is very strange, as it'll drop while you're driving faster than you can cover the distance. This is at 55mph with the cruise control set. It'll lose 2-3 miles of range over the course of a mile, then finally settle down. OR...it'll remain constant and then when you park, right before shutting it off, it'll drop dramatically.
Kinda wish GM would incorporate some of Saab's stuff into their Chevy/GMC trucks. The onboard computer leaves much to be desired.
Oh yeah, the cruise control is weird too (compared to the Saab). It's not smooth. You can feel it "jump" a bit when engaging or disengaging, and it'll try to "floor it" going uphill, causing high revs and a downshift. I've had to drive it recently while the Saab is getting worked on at the dealer...
Thoughts?
~jp