Flash: Powertrain Diagnostic And System Enhancements
This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest
available software.
A small number of customers may experience one or more of the following conditions:
· With the cluster set on metric units, they are unable to accurately increase or
decrease the cruise control set speed using the resume or set buttons. Instead of
changing vehicle speed by 1 kph when pressing the buttons, the vehicle speed will
increase approximately 1.6 kph.
· Potential gear hunting during cruise operation at lower vehicle speeds 40-64 kph
(25-40 mph).
In addition, a small number of customers may experience certain symptoms/conditions or
a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician
may find that the following Diagnostic Trouble Codes have been set:
· **P1115 - General Temperature Rationality.
· P0456 - EVAP System Small Leak.
· P0441 - EVAP Purge System Performance.
· P2610 - PCM Internal Engine Off Timer Performance.
· P0300 - Multiple Cylinder Misfire.
· P0301 - Cylinder 1 Misfire.
· P0302 - Cylinder 2 Misfire.
· P0303 - Cylinder 3 Misfire.
· P0304 - Cylinder 4 Misfire.
· P0305 - Cylinder 5 Misfire.
· P0306 - Cylinder 6 Misfire.
· P0307 - Cylinder 7 Misfire.
· P0308 - Cylinder 8 Misfire.
· P0335 - Crankshaft Position Sensor Circuit.
· P0122 - Throttle Position Sensor 1 Circuit Low.
· P0123 - Throttle Position Sensor 1 Circuit High.
· P0222 - Throttle Position Sensor 2 Circuit Low.
· P0223 - Throttle Position Sensor 2 Circuit High.
· P2299 - Brake Pedal Position / Accelerator Pedal Position Incompatible.**
· P2096 - Downstream Fuel Trim System 1 Lean. (LC vehicles with Sales Code ESH
with a manual transmission (Sales Code DEC).
· P2097 - Downstream Fuel Trim System 1 Rich. (LC vehicles with Sales Code ESH
with a manual transmission (Sales Code DEC).
