Cigar lighter (power outlet) fuses in the GMC Sierra are the fuses #1, #10, #11 and #12 in the Left Instrument panel fuse box, and fuses #1 and #2 in the Right Instrument panel fuse box. Table of Related searches for 2008 gmc sierra fuse diagram 2008 gmc fuse panel diagramgmc sierra fuse box location2008 chevy silverado fuse box2008 silverado 1500 fuse diagram2008 silverado fuse block2007 gmc sierra fuse box2013 gmc sierra fuse panel2003 gmc fuse box diagram