Chevy Silverado Forum (GMC Sierra)
2008 Silverado 5.3 V8 with AFM with 180,000 miles
Current issue is flashing check engine light with code p0300, snap-on scan tool reading missfires on cylinders 1, 2, 4, and 7
Before current issue the truck had slight lifter ticking sound and white smoke upon every start up which would go away...