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Diagnostic Trouble Code: B0283
Diagnostic Trouble Code Name: Electric Rear Defrost Circuit
Vehicle Make: Pontiac
Vehicle Model: G8 (VE)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Diagnostic Trouble Code Description:
Transmission Control Module Overtemperature
Possible Sensor Faults
TCM
Possible Related Diagnostic Trouble Codes
DTC P0634
Circuit / System Description
The control solenoid (w/body and TCM) valve assembly has a built-in TCM temperature sensor to detect overtemperature conditions and is not serviced separately. TCM power will produce heat that is absorbed by the internal heat sink. As long as the heat sink and the controller base plate stay below 142?C (288?F), the TCM will stay operational (no overtemperature shut down). This fault indicates the TCM is in an overtemperature condition and the TCM has shut down to protect it from possible heat damage. The TCM will remain off until the overtemperature condition no longer exists.
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