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Diagnostic Trouble Code: 021
Diagnostic Trouble Code Name: Rear Defrost Request 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:
1-2 Shift Solenoid (SS) Valve Performance - No Second or Third
Gear
Possible Sensor Faults
TCM
Possible Related Diagnostic Trouble Codes
DTCP0752
Circuit / System Description
The 1-2 shift solenoid (SS) valve controls the fluid flow acting on the 1-2 and 3-4 shift valves. The 1-2?SS valve is a normally-open exhaust valve that is used with the 2-3?SS valve, in order to allow 4?different shifting combinations.
When the transmission control module (TCM) detects a 1-1-4-4 shift pattern, then DTC?P0752 sets. DTC?P0752 is a type?B?DTC.
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