08-137-26 REV. E

Flash: Ignition System Control Module (ISCM) Updates PCR9A Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):
• **P0300-00 - Multiple Cylinder Misfire.
• P0301-00 - Cylinder 1 Misfire.
• P0302-00 - Cylinder 2 Misfire.
• P0303-00 - Cylinder 3 Misfire.
• P0304-00 - Cylinder 4 Misfire.
• P0305-00 - Cylinder 5 Misfire.
• P0306-00 - Cylinder 6 Misfire.** NOTE: **The above DTCs are being set during cold starts.** This bulletin involves inspecting and possibly reprogramming the ISCM, TCM and PCM with the latest available software.