I just returned from an 800+ mile trip, and pulled down the best MPG to date with my 95 Tahoe.
Averaging 68 mph on the freeway I hit 18.67 MPG. Normally I average closer to 17.5 MPG. I've never really taken any long trips with this vehicle without some sort of trailer or heavy gear, so I've never really got to see what she'd do solo.
Also, take into consideration that the old Tahoe was loaded down with three passengers and lots of luggage; and she still did all this with over 264K on the clock!
We had actually planned to take my wife's minivan, but at the last minute, the engine started puking oil into the coolant. So now I get to see what I have to do with a Chrysler 3.3L with only 160K on her.
But old faithful was standing by ready to go and didn't let us down!
Casey
1995 K1500 Tahoe 2 door, 6.5LTD, 4L80E, NP241, 3.42's, 285/75R16 BFG K02's; 1997 506 block; Kennedy OPS harness, gauges, Quick Heat plugs, and TD-Max chip; Dtech FSD on FSD Cooler; vacuum pump deleted, HX35 turbo, Turbo Master, 3.5" Kennedy exhaust, F code intake; dual t/stats, HO water pump, Champion radiator; Racor fuel filter