It is on the frame rail, inside part of frame, driverside, back by the transmission cross member.
How to replace a fuel filter on a 1984 Chevy S-10
The 2003 Chevrolet Suburban fuel filter is located inside of the gas tank. You will to remove the gas tank in order to change the fuel filter.
The fuel filter for this truck should be under the drivers seat connected to the frame rail.
The 2014 Chevrolet Suburban runs on flex-fuel (FFV).
The 2010 Chevrolet Suburban runs on flex-fuel (FFV).
The 2004 Chevrolet Suburban runs on flex-fuel (FFV).
The 2006 Chevrolet Suburban runs on flex-fuel (FFV).
The 2015 Chevrolet Suburban runs on flex-fuel (FFV).
The 2003 Chevrolet Suburban runs on flex-fuel (FFV).
About half way down the driver's side inside the chasis rail.
The 2011 Chevrolet Suburban runs on flex-fuel (unleaded/E85).
The 2013 Chevrolet Suburban runs on flex-fuel (unleaded/E85).