Flash: Powertrain Diagnostic And System Improvements
This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest
available software.
A small number of customers may experience a Malfunction Indicator Lamp (MIL)
illumination. Upon further investigation, the technician may find one or more of the
following DTCs:
P1186 - Cylinder 1 Oil Supply Solenoid Valve Switch Off Time Out Of Range
P0128 - Cylinder 2 Oil Supply Solenoid Valve Switch Off Time Out Of Range
P0101 - Mass Air Flow Sensor "A" Circuit Performance.
P1066 - Cylinder 1 Oil Supply Solenoid Valve Switch Off Time Out Of Range.
P1068 - Cylinder 2 Oil Supply Solenoid Valve Switch Off Time Out Of Range.
P106A - Cylinder 3 Oil Supply Solenoid Valve Switch Off Time Out Of Range.
P106C - Cylinder 4 Oil Supply Solenoid Valve Switch Off Time Out Of Range.
P0335-00 - Crankshaft Position Sensor Circuit.
P1185 - General Pressure Sensor Correlation.
C0501, C0507, C050D, C0513 - Wheel Speed Sensor Rationality Errors.
In addition, customers may experience one of the following conditions:
Less than desired idle performance.
Intermittent elevated engine RPM at start up.
Other enhancements included in this update:
Min spark changes to prevent catalytic converter overheating.
Active grill shutter diagnostics (If equipped).
Electronic Start/Stop (ESS) improvements.
Upshift quality improvement when engine is cold.
