2004 Chevy Suburban and Performance Chips

camocav

I have a 2004 Suburban, AWD, 5.3 Flex Fuel eng and was wondering if anyone can expound on the credibility of performance chips to increase Fuel Mileage (i.e. do they work)?

stever

Check out the Performance Modules and Chips discussion too.

rockman59

And in many cases the performance chips will void your factory warranty.