RepairPal Certified shops can diagnose and repair your 2005 GMC Sierra 1500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Hello, there is no ignition control module for this vehicle. The engine's processor controls all ignition function.
What is the concern you are having?
I'm trying to install tach don't know where to plug in green wire 4.8L vortec 2006