ECM Reprogramming
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- If the ECM needs to be reprogrammed, refer to Service Programming System (SPS) .
- Perform the Fuel Composition Diagnostic-Refer to Fuel Composition Diagnosis for the 5.3L (LMG or LC9).
- Engine Oil Life Remaining-When available, use a scan tool to reset the Engine Oil Life Remaining back to the original percentage recorded before the module was reprogrammed.
- Transmission Fluid Life Remaining-When available, use a scan tool to reset the Transmission Fluid Life Remaining back to the original percentage recorded before the module was reprogrammed.