2008 Hummer H3 with engine code P0302

Question

Hello,
I have a recrurent P0302 code on my H3 Hummer 2008 with the 5 cylinder 3,7 liter
what can i doo?

Answer 1

P0302 Misfire number 2 cylinder

Check for water intrusion going into the sparkplug well. Hummer put out a TSB about water intrusion entering into the ignition sparkplug well what you do is to seal the hood air grille