Took my 2012 Tahoe LT to the dealer because the transition from 8 to 4 cylinders caused the truck to vibrate, especially at low speeds. A tech rode with me and agreed that it seemed excessive. Returning to the shop and reporting to the service writer what we found, he reached in drawer and...
My 2012, with two people on the highway at 65 mph, regularly gets 20 mpg - 22 mpg. Wind, hills, or a heavy foot drops it pretty quick. Around town never over 14 mpg.
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