1998 GMC Sierra, 4.3 V6, Lowered 2" in rear, 20" wheels, Stereo System, Halo Headlights, Euro Lights, After Market Grille. Drove this puppy for 5 years, good truck just out grew. Guys called me Juan after I bought it..
Help !! I have a 1998 GMC Sierra 1500 I have done everything I can possibly do by changing anything I can possibly change and it's still misfiring and it is running so bad is there any suggestions ...