Silverado 1500 2WD V8-6.0L Hybrid (2009)
1.
A new Internal Mode Switch (IMS) has been added (2). The PSM has been deleted.
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Do not reuse the roll pin that retains the IMS (2) to the manual shaft (3).
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Do not remove the "C" clip from the IMS (2). This will damage the part.
2.
The manual shaft (3) has been redesigned to accommodate the IMS (2).
3.
The actuator rod (1) is a new design and will back service. It has a flat on the rod to accommodate the IMS (2).
The wiring harness has been changed and now has the temperature sensor (2) in the harness with a gray connector. Both the 20-way connector (1)
and the 6-pin connector for the IMS are now blue in color (3).
The new DTCs shown above have been added for the IMS.
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