Silverado 2008

4.8L V8 VIN C Auto 19

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Trouble Code: P0877



Transmission Fluid Pressure (TFP) Switch 4 Circuit Low Voltage

Possible Causes:



P0877
 
The TCM detects that the TFP switch 4 signal voltage remains low, 0 volts when the 1-2-3-4 clutch is commanded ON for 5 seconds.
 

Trouble Code: P0878



Transmission Fluid Pressure (TFP) Switch 4 Circuit High Voltage

Possible Causes:



P0878
 
The TCM detects that the TFP switch 4 signal voltage is high, 12 volts when the 1-2-3-4 clutch is commanded OFF.
 

Trouble Code: P0881



Transmission Control Module (TCM) Power Input Signal Performance

Possible Causes:



DTC P0881 sets when the TCM detects a battery direct voltage variation of 4.0 volts or greater for 30 seconds.
 

Trouble Code: P0882



Transmission Control Module (TCM) Power Input Signal Low

Possible Causes:



DTC P0882 sets when the TCM detects a battery direct voltage below 8 volts at 0°C (32°F) for a total of 5 out of 7 seconds. The voltage threshold is temperature dependent varying from 5 volts at -60° C (-75°F) to 9 volts at 20° C (68°F).
 

Trouble Code: P0883



Transmission Control Module (TCM) Power Input Signal High

Possible Causes:



DTC P0883 sets when the TCM detects battery direct voltage greater than 18 volts for 6 out of 10 seconds.
 

Trouble Code: P0894



Transmission Component Slipping

Possible Causes:



The TCM detects turbine speed greater than 50 RPM for 3 seconds. This condition must occur 3 times.
 

Trouble Code: P0961



Line Pressure Control (PC) Solenoid System Performance

Possible Causes:



P0961
 
The TCM detects an internal electrical performance malfunction of the line PC solenoid control circuit and the actual line pressure does not equal the commanded line pressure for 300 milliseconds.
 

Trouble Code: P0961



Line Pressure Control (PC) Solenoid System Performance

Possible Causes:



The PC solenoid valve duty cycle reaches its high limit, approximately 95 percent, or low limit, approximately 1.9 percent.
 

Trouble Code: P0962



Line Pressure Control (PC) Solenoid Control Circuit Low Voltage

Possible Causes:



P0962
 
The TCM detects an internal low voltage electrical malfunction of the line PC solenoid control circuit for 300 milliseconds.
 

Trouble Code: P0963



Line Pressure Control (PC) Solenoid Control Circuit High Voltage

Possible Causes:



P0963
 
The TCM detects an internal high voltage electrical malfunction of the line PC solenoid control circuit for 300 milliseconds.
 

Trouble Code: P0965



Clutch Pressure Control (PC) Solenoid 2 System Performance

Possible Causes:



P0965
 
The TCM detects an internal electrical performance malfunction of the clutch PC solenoid control circuit and the actual 3-5-R clutch pressure does not equal the commanded 3-5-R clutch pressure for 300 milliseconds.
 

Trouble Code: P0966



Clutch Pressure Control (PC) Solenoid 2 Control Circuit Low Voltage

Possible Causes:



P0966
 
The TCM detects an internal low voltage electrical malfunction of the clutch PC solenoid control circuit for 300 milliseconds.
 

Trouble Code: P0967



Clutch Pressure Control (PC) Solenoid 2 Control Circuit High Voltage

Possible Causes:



P0967
 
The TCM detects an internal high voltage electrical malfunction of the clutch PC solenoid control circuit for 300 milliseconds.
 

Trouble Code: P0969



Clutch Pressure Control (PC) Solenoid 3 System Performance

Possible Causes:



P0969
 
The TCM detects an internal electrical performance malfunction of the clutch PC solenoid control circuit and the actual low and reverse/4-5-6 clutch pressure does not equal the commanded low and reverse/4-5-6 clutch pressure for 300 milliseconds.
 

Trouble Code: P0970



Clutch Pressure Control (PC) Solenoid 3 Control Circuit Low Voltage

Possible Causes:



P0970
 
The TCM detects an internal low voltage electrical malfunction of the clutch PC solenoid control circuit for 300 milliseconds.
 

Trouble Code: P0971



Clutch Pressure Control (PC) Solenoid 3 Control Circuit High Voltage

Possible Causes:



P0971
 
The TCM detects an internal high voltage electrical malfunction of the clutch PC solenoid control circuit for 300 milliseconds.
 

Trouble Code: P0973



Shift Solenoid (SS) 1 Control Circuit Low Voltage

Possible Causes:



P0973
 
The control solenoid (w/body and TCM) valve assembly detects an internal low voltage electrical malfunction of the SS 1 control circuit when the SS 1 is commanded OFF for 300 milliseconds.
 

Trouble Code: P0973



1-2 Shift Solenoid (SS) Control Circuit Low Voltage

Possible Causes:



P0973
 
The TCM detects an open in the 1-2 shift solenoid valve circuit when commanded ON.
 
The TCM detects a short to ground in the 1-2 shift solenoid valve circuit when commanded OFF.
 

Trouble Code: P0974



Shift Solenoid (SS) 1 Control Circuit High Voltage

Possible Causes:



P0974
 
The control solenoid (w/body and TCM) valve assembly detects an internal high voltage electrical malfunction of the SS 1 control circuit when the SS 1 is commanded ON for 300 milliseconds.
 

Trouble Code: P0974



1-2 Shift Solenoid (SS) Control Circuit High Voltage

Possible Causes:



The TCM commands the solenoid ON and the voltage feedback remains high B+.
 

Trouble Code: P0976



Shift Solenoid (SS) 2 Control Circuit Low Voltage

Possible Causes:



P0976
 
The TCM detects an internal low voltage electrical malfunction of the SS 2 control circuit when the SS 2 is commanded OFF for 300 milliseconds.
 

Trouble Code: P0976



2-3 Shift Solenoid (SS) Control Circuit Low Voltage

Possible Causes:



P0976
 
The TCM detects an open in the 2-3 shift solenoid valve circuit when commanded ON.
 
The TCM detects a short to ground in the 2-3 shift solenoid valve circuit when commanded OFF.
 

Trouble Code: P0977



Shift Solenoid (SS) 2 Control Circuit High Voltage

Possible Causes:



P0977
 
The TCM detects an internal high voltage electrical malfunction of the SS 2 control circuit when the SS 2 is commanded ON for 300 milliseconds.
 

Trouble Code: P0977



2-3 Shift Solenoid (SS) Control Circuit High Voltage

Possible Causes:



The TCM commands the solenoid ON and the voltage feedback remains high B+.
 

Trouble Code: P0989



Transmission Fluid Pressure (TFP) Switch 5 Circuit Low Voltage

Possible Causes:



P0989
 
The TCM detects that the TFP Switch 5 signal voltage remains low, 0 volts when the low and reverse clutch or the 4-5-6 clutch is commanded ON.
 

Trouble Code: P0990



Transmission Fluid Pressure (TFP) Switch 5 Circuit High Voltage

Possible Causes:



P0990
 
the TCM detects that the TFP Switch 5 signal voltage is high, 12 volts when the low and reverse clutch or the 4-5-6 clutch is commanded OFF.
 

Trouble Code: P1133



HO2S Insufficient Switching Bank 1 Sensor 1

Possible Causes:



P1133
 
The ECM detects that the HO2S 1 rich-to-lean counts, or the lean-to-rich counts are less than a calibrated value.
 
DTC P1133 sets within 100 seconds when the above condition is met.
 

Trouble Code: P1153



HO2S Insufficient Switching Bank 2 Sensor 1

Possible Causes:



P0153
 
The ECM detects that the HO2S 1 rich-to-lean or lean-to-rich average response time is more than a calibrated value.
 
DTC P0133 sets within 100 seconds when the above condition is met.
 
P0154
 
The ECM detects that the HO2S 1 parameter is between 350-550 mV for 100 seconds.
 
The Throttle Position (TP) Indicated Angle parameter changes more than 5 percent, 1 time.
 
DTC P0154 sets within 100 seconds when the above conditions are met.
 
P0160
 
The ECM detects that the HO2S 1 parameter is between 410-490 mV.
 
The TP Indicated Angle parameter changes more than 5 percent 1 time.
 
DTC P0160 sets within 100 seconds when the above conditions are met.
 
P1153
 
The ECM detects that the HO2S 1 rich-to-lean counts, or the lean-to-rich counts are less than a calibrated value.
 
DTC P1153 sets within 100 seconds when the above condition is met.
 
P2272
 
The ECM detects that the affected sensor is below 730 mV.
 
DTC P2272 sets within 1 second when the above condition is met.
 
'
 
P2A04
 
The ECM detects that the HO2S 1 did not transition below 200 mV and above 730 mV during the passive test.
 
One of the following tests fail:
 
The Lean Intrusive Test detects that the sensor is more than 200 mV for 12 seconds.
 
The Rich Intrusive Test detects that the sensor is less than 730 mV for 12 seconds.
 
DTC P2A04 sets within 10 minutes when the above conditions are met.
 

Trouble Code: P1153



HO2S Insufficient Switching Bank 2 Sensor 1

Possible Causes:



P1153
 
The ECM detects that the HO2S 1 rich-to-lean counts, or the lean-to-rich counts are less than a calibrated value.
 
DTC P1153 sets within 100 seconds when the above condition is met.
 

Trouble Code: P1174



Fuel Trim Cylinder Balance Bank 1

Possible Causes:



Multiple samples of the pre-catalyst HO2S accumulated voltage are consistently greater than the desired value.
 

Trouble Code: P1175



Fuel Trim Cylinder Balance Bank 2

Possible Causes:



Multiple samples of the pre-catalyst HO2S accumulated voltage are consistently greater than the desired value.
 

Trouble Code: P1224



Fuel Injector 1 Control Circuit Shorted

Possible Causes:



The ECM injector output driver detects an incorrect current on a fuel injector circuit.
 
The condition exists for 1 second.
 

Trouble Code: P1227



Fuel Injector 2 Control Circuit Shorted

Possible Causes:



The ECM injector output driver detects an incorrect current on a fuel injector circuit.
 
The condition exists for 1 second.
 

Trouble Code: P122A



Fuel Injector 3 Control Circuit Shorted

Possible Causes:



The ECM injector output driver detects an incorrect current on a fuel injector circuit.
 
The condition exists for 1 second.
 

Trouble Code: P1233



Fuel Injector 4 Control Circuit Shorted

Possible Causes:



The ECM injector output driver detects an incorrect current on a fuel injector circuit.
 
The condition exists for 1 second.
 

Trouble Code: P1236



Fuel Injector 5 Control Circuit Shorted

Possible Causes:



The ECM injector output driver detects an incorrect current on a fuel injector circuit.
 
The condition exists for 1 second.
 

Trouble Code: P1239



Fuel Injector 6 Control Circuit Shorted

Possible Causes:



The ECM injector output driver detects an incorrect current on a fuel injector circuit.
 
The condition exists for 1 second.
 

Trouble Code: P1242



Fuel Injector 7 Control Circuit Shorted

Possible Causes:



The ECM injector output driver detects an incorrect current on a fuel injector circuit.
 
The condition exists for 1 second.
 

Trouble Code: P1247



Fuel Injector 8 Control Circuit Shorted

Possible Causes:



The ECM injector output driver detects an incorrect current on a fuel injector circuit.
 
The condition exists for 1 second.
 

Trouble Code: P1258



Engine Coolant Over temperature - Protection Mode Active

Possible Causes:



Coolant temperature more than 132°C (270°F) for greater than 10 seconds.
 

 
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