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Join Date: Feb 2001
Location: Cumberland County 5A
Re: GMC Sierra SLT P/U
My 2010 Silverado Z71 had 3:08 gears. Never again!!!
When I bought it, the majority of the new trucks on the lot had 3:08s. Coupled with the then-new six speed and the fuel saver feature (V8 to V4), was supposed to deliver good fuel mileage. Never happened. That truck never did better than 18 MPG, highway.
Compared to the '06 Sierra w/3:42s (both 5.3L V8s), it was a dog off the line and got awful fuel mileage. Commonly got closer to 20 MPG highway with the GMC. Went for the GMC back then, because I liked their front end better than the '06 Silverado.
By comparison, the 2014 Silverado w/3:42 gears does 20 + MPG regularly and is a rocket.
Some folks' learnin' curves just look like circles...3A Camp/also hunt 4B