Looking at a 2007 Tahoe, 5.3 .373. What can I realistically expect for gas mileage. I tow about 4000lbs on a tandem trailer. Currently have a Trailblazer, 4.0 .342. Getting maybe 20 highway (with a tailwind), 17 around town, and around 12 towing. Will I be close?
Thanks in advance,
Gary