2005 GMC Sierra, Multiple Misfires
This 2005 GMC Sierra came in with a poor run condition and multiple misfire codes stored. Code P0304 was one of the misfire codes stored. While looking at data I noted that misfires on cylinder #4 were markedly higher that most of the other cylinders. Normally when confronted with high misfire counts on this engine … Continue reading “2005 GMC Sierra, Multiple Misfires”