08-137-26 REV. D

Flash: Ignition System Control Module (ISCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):
• P2096-00 - Downstream Fuel Trim System 1 Lean.
• P2097-00 - Downstream Fuel Trim System 1 Rich.
• P2098-00 - Downstream Fuel Trim System 2 Lean.
• P2099-00 - Downstream Fuel Trim System 2 Rich.
• P068A-00 - ECM Power De-Energized Performance-Too Early. NOTE: The above DTCs are being falsely set due to lack of robustness to the diagnostic monitor. Customers may also comment on the following:
• Vehicle exhibits a no crank / no start condition. This bulletin involves inspecting and possibly reprogramming the ISCM, TCM and PCM with the latest available software.