Chevy Silverado and GMC Sierra Forum banner
1 - 1 of 20 Posts

· Administrator, How-To Author, 🏅TOTM
9,083 Posts
If you had good spark, why did you change the coil? Most likely, it's a collapsed AFM lifter. Could require replacing the cam, too. A dealer is going to be WAY more expensive than a good, local, independent shop. Let us know the diagnosis.
1 - 1 of 20 Posts