By Jerrygee on
Vehicle2003 Chevrolet Silverado 2500HD 4dr Extended Cab LT 4WD LB (6.0L 8cyl 4A)
ReviewAlmost 500 cubic inches and the 5 speed Allison automatic transmission makes for plenty of towing and hill climbing power. Gas mileage is better then what you would expect at 12+ MPG on the highway when not towing, but watch the mileage plummet when pulling a load. Reliability has been perfect at 11 months and 17,000+ miles of ownership. Interior is spacious, rattle free and quite. Ride is a little harsh, but don’t forget, it is a truck! My only complaint is the Allison transmission does “spaz out” every now and then and gives me strange downshifts when coming to a stop or “clunks” when first going into drive in the morning.
Best FeaturesLarge displacement torque master engine, smooth shifting Allison transmission with auto downshifts when braking down hills.
Worst FeaturesNormally flawless Allison transmission does have a few bugs. Oil consumption is a little high but not a problem.
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