Fuel filter 2003 Sierra

[monkey44]

Where is the fuel filter located on a '03 GMC Sierra 4x4 SB-Xcab? Thx BD

 

[kronik]

left hand inner frame rail

 

[trentless]

Just replaced my 2000 Silverado (300K miles) with an 05 Sierra SLT went to get air and fuel filter and was told the fuel is non serviceable??
Today my service airbag warning came on, probably a bad sensor?