by tdorsett_1 on Mar 3, 2003 Vehicle: 2003 GMC Sierra 3500 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 4A)
Hauling hay and horses has never been
so easy, power to spare, better on fuel
mileage that I would have though.
Pulling a small 2-horse slant load
trailer with two 1200 lb. horses or a
twenty-foot trailer loaded with three
round bails of hay, I get an average of
18 miles per gallon. Without pulling, I
get between 21 and 25 miles per Gallon.
by Bob Sutliff on Jan 4, 2003 Vehicle: 2003 GMC Sierra 3500 4dr Extended Cab 4WD LB DRW (6.0L 8cyl 4A)
Truck looks great! Fuel mileage (non
towing) is not bad for a ton dually at
13 mpg. Towing is another story. Six
(6) miles per gallon is the average for
this 6.0L engine.
Tow mileage is terrible and the truck
is at its maximum performance on the
interstate at 70mph. It absolutely has
no power left.
The Sierra gets a revised look this year that includes a new front fascia, revised side moldings and optional multifunction, fold-away mirrors. On the inside, GMC has added new seats, a more comprehensive driver information center, a redesigned instrument panel and optional dual-zone climate control and satellite steering wheel controls. On the hardware side, the standard 6.0-liter V8 gets electronic throttle control as well as the ability to run exclusively on compressed natural gas (CNG) or a mix of CNG and gasoline. Other upgrades include an improved Insta-Trac part-time four-wheel-drive system for reduced service costs, a more efficient starter for the 8.1-liter V8 and a revised headlight switch that allows drivers to turn off the daytime running lamps.