I had a 2005, and it got 16 city and around 22 highway.
99 mpg
I have a 2002 Blazer with the 4.3L engine and 3.73 differential gear ratio, it gives me 17 mpg on average.
Aprox 16 to 29 mpg highway, depending on engine size, gear ratio and transmission.
about 27 highway mpg
Yes
An alternator from a 2000 Chevy blazer will fit a 2002 S10 blazer with a little fabrication.
I have a 98 S10 pickup with the 2.2L engine and standard transmission. I average 27 mpg.
no GM changed the cases
With the 4.3 L engine and 3:73 gears, around 18 mpg.
19 on highway
with a dipstick
Yes