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Diagnostic Trouble Code: 028
Diagnostic Trouble Code Name: Driver Window Express Down Switch Circuit
Vehicle Make: Chevrolet
Vehicle Model: Tosca (V250)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
Shift Solenoid 1 Valve Performance - Stuck On
Possible Sensor Faults
TCM
Possible Related Diagnostic Trouble Codes
DTC P0752
Circuit / System Description
The shift solenoid?(SS) 1 is part of the control solenoid (w/body and TCM) valve assembly. The assembly is attached to the lower control valve body and has no serviceable parts. The solenoid operates by the TCM opening or closing the ground circuit. With the solenoid circuit grounded (solenoid on), the internal plunger and metering ball block the exhaust fluid creating signal fluid pressure. The signal fluid acts against the clutch select valve?2 to overcome the valve spring force moving it to the apply position, allowing the shift. The TCM shifts the transmission by operating the solenoids in on/off combinations.
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