TrailBlazer 2002-2009
The TrailBlazer, originally introduced as an upscale Blazer, was produced from 2002 to 2008 with a powerful I6 engine and with a monster V8 offered in the Trailblazer SS
Platform: GMT 305, 360, & 370.

how to improve gas mileage

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Old April 23rd, 2018, 8:42 AM
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Default how to improve gas mileage

is there a way to improve gas mileage? tuners that work. 2008 trailblazer 4.2. Thank you.
Old May 2nd, 2018, 4:55 PM
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Not really other than the usual things, run all 4 tires at 35-36 lbs. Make sure air filter is clean or change air filter . Run a quality fuel system cleaner thru the system once per oil change . You will never get more than 22-23 mpg highway on these in the summer . It will be lower than that in the winter .




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