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Chevrolet Silverado / GMC Sierra. Manual - part 2875
Review Strategy Based Diagnosis for an overview of the diagnostic approach.
Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptor
DTC C0569 4B
System Configuration Error Calibration Data Not Learned
Diagnostic Fault Information
Circuit/System Description
This DTC is set anytime a new transfer case shift control module is installed. The transfer case
motor learn procedure must be performed to erase this DTC. The motor learn procedure allows
the module to learn where the shift rails are located.
Conditions for Running the DTC
The ignition is ON.
System voltage is 10.5-18 volts.
Conditions for Setting the DTC
The motor learn procedure for a new module has not been performed.
Action Taken When the DTC Sets
Shifting is still disabled until the motor learn procedure has been performed.
The SERVICE 4WD indicator will be illuminated for this DTC.
Conditions for Clearing the DTC
The transfer case shift control module clears the DTC if the motor learn procedure has been
successfully performed.
Circuit
Short to
Ground
Open/High
Resistance
Watchdog/Safety
Failure
Internal
Electronic
Failure
Electronic Control Unit
Malfunction
-
-
DTC C0550 39
DTC C0550
39
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1625/1626-NQF - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Reference Information
Schematic Reference
Transfer Case Control Schematics
Connector End View Reference
Component Connector End Views
Electrical Information Reference
Circuit Testing
Connector Repairs
Testing for Intermittent Conditions and Poor Connections
Wiring Repairs
Scan Tool Reference
Scan Tool Data List
Scan Tool Data Definitions
Diagnostic Aids
Perform the motor learn procedure before normal operation will occur.
Circuit/System Testing
Perform the motor learn procedure.
Repair Procedures
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Transfer Case High/Low Clutch Reset
DTC C0896
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic approach.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1625/1626-NQF - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptor
DTC C0896 03
Device Voltage Range Voltage Below Threshold
DTC C0896 07
Device Voltage Range Voltage Above Threshold
Diagnostic Fault Information
Circuit/System Description
This DTC is set up to detect a high or low voltage situation. This could indicate a vehicle issue in
which all electrical components would be affected. It could also be transfer case control module
specific due to poor power or ground connections.
Conditions for Running the DTC
The ignition is ON.
System voltage is 10.5-18.5 volts.
Conditions for Setting the DTC
The voltage is above 18.5 volts or below 10.5 volts for 15 seconds.
Action Taken When the DTC Sets
Shifting is disabled until the voltages change to be within the specifications.
The SERVICE 4WD will illuminate for the remainder for the ignition cycle.
Conditions for Clearing the DTC
Circuit
Short to
Ground
Open/High
Resistance
Voltage
Below
Threshhold
Voltage
Above
Threshhold
Device Voltage Range
-
-
DTC C0896
03
DTC C0896
07
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1625/1626-NQF - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
The transfer case shift control module clears the DTC if the condition for setting the DTC is
not currently present.
A history DTC clears after 40 consecutive warm up cycles without a fault present.
History DTCs can be cleared using a scan tool.
Reference Information
Schematic Reference
Transfer Case Control Schematics
Connector End View Reference
Component Connector End Views
Electrical Information Reference
Circuit Testing
Connector Repairs
Testing for Intermittent Conditions and Poor Connections
Wiring Repairs
Scan Tool Reference
Scan Tool Data List
Scan Tool Data Definitions
Diagnostic Aids
Perform the motor learn procedure before normal operation will occur.
Circuit/System Testing
1. If the voltage is low check the voltage on other vehicle systems to determine if this is a
vehicle wide condition and take appropriate actions. If this is transfer case specific check
the ignition 3 feed to the transfer case control module and the ground for the transfer case
control module for proper connections.
2. If the voltage is high, this is likely a vehicle issue such as an alternator problem or the
vehicle has been hooked up improperly during a jump start.
3. After the condition is corrected perform the motor learn procedure.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1625/1626-NQF - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
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