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- Location
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I have a 2001 Silverado 2500 HD, standard cab long bed, with the 496 and Allison Automatic. Same boat, I can pull a house across town, but I get 8 city, 12 highway.
I used to have a '79 K-5 blazer. It got about 5 mpg, city or highway. I didn't buy it for the mileage anyway.
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