I believe of the factory show room floor around the neighborhood of 13-18 mpg. Erik
i have 2004 blazer in ammman Jordan not more than 87 miles per gallon.
17 to 19 on average.
i have not found a blazer or jimmy that gets over15 mpg no matter what ya do to it.
16 city and 21 highway.
I have a 2002 Blazer with the 4.3L engine and 3.73 differential gear ratio, it gives me 17 mpg on average.
I get around 20 city and 22 highway in my 96 with regular unleaded gasoline.
I have a 1997 chevy tahoe, and i get about 10 miles to the gallon usually
5.8 miles per gallon
about 10 miles per gallon
My 1994 Chevy Silverado ext cab with stock tires is getting 14 miles per gallon the only mods it has is a k&N drop in filter and 2 3/4 exhaust with a highflow cat and muffler..
a 1997 Chevy Tahoe gets around 16 miles to the gallon highway and about 10 miles to the gallon around town that's about the best you get out of them.
A 1991 Chevy Suburban will get 11 miles per gallon if driving in the city. It gets around 15 miles per gallon on the highway.