ECM Reprogramming

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: DO NOT reprogram a FlexFuel (E85) vehicle while the fuel composition learn function is active. If necessary, drive the vehicle until the scan tool indicates that the fuel composition learn parameter is inactive. Programming with the fuel composition learn active will result in fuel trim DTCs.

If the ECM needs to be reprogrammed, refer to Service Programming System (SPS) .
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.