Vehicles with a yellow fuel cap can use either unleaded gasoline or ethanol fuel containingup to 85% ethanol (E85). SeeE85 or FlexFuel. For all other vehicles, use only the unleaded gasoline described underRecommended Fuel.
Scan Tool Snapshot Procedure
Vibration Theory and TerminologyK20 Engine Control Module: Programming and Setup Engine Control Engine Control Module
Special ToolsEL-49642 SPS Programming Support ToolFor equivalent regional tools, refer toSpecial Tools.Note:DO NOT program a control module unless directed to by a service procedure or a servicebulletin. If the control module is not properly configured with the correct calibrationsoftware, the contr ...