GMC Envoy persistent check engine and creep light issues despite multiple throttle and module replacements on GMC Envoy

Some GMC Envoy owners report experiencing persistent check engine and creep light issues even after multiple throttle and module replacements. These problems can stem from various triggers, including minor issues like a loose gas cap or more complex failures such as a faulty catalytic converter or sensors. The check engine light illuminates when the onboard diagnostic system detects a potential fault, which can involve over 1000 possible issues related to the engine or transmission. Owners are advised to pull the diagnostic trouble code to identify and address the underlying problem, and then drive the vehicle to ensure the system recognizes the issue has been resolved. Additionally, some owners find it beneficial to verify that replacements were correctly installed and functioning, check for any unresolved underlying issues, and seek professional diagnostic assistance to accurately pinpoint the cause of their persistent check engine and creep light concerns.