× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: Changing 2004 Tahoe 5.3L spark plugs
Posted to Technical Tips Forum on 2/24/2021

Our Fords with the 5.4 and 6.8 idle for entended periods. The first set of plugs that we pulled at 100,000 miles. We were amazed that the engine ran, let alone did not skip. the gaps were twice what they should have been. We now replace them at 50,000 miles. I... Login to read more.