Montana SV6 (2006), Relay, Terraza, Uplander (2005-2007)

3.4L V6 VIN E Auto 3

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Trouble Code: P0717



A/T Input Speed Sensor Circuit Low Input (4T65-E)

Possible Causes:



ISS positive (+) circuit is open, shorted to ground or to power
 
ISS negative (-) circuit is open, shorted to ground or to power
 
ISS is damaged or has failed
 
PCM has failed
 
TSB 02-07-30-022A contains a repair procedure for this code
 

Trouble Code: P0717



A/T Input Shaft Speed Sensor Low Input (4T40/4T45-E)

Possible Causes:



ISS positive (+) circuit is open, shorted to ground or to power
 
ISS negative (-) circuit is open, shorted to ground or to power
 
ISS is damaged or has failed
 
PCM has failed
 
TSB 02-07-30-022A contains a repair procedure for this code
 

Trouble Code: P0719



TCC Brake Switch Circuit Low Input (4T60-E, 4T65-E)

Possible Causes:



TCC brake switch circuit is open or shorted to ground
 
TCC brake switch power circuit is open (check ABS PCM fuse)
 
TCC brake switch is out of adjustment or damaged
 
PCM has failed
 

Trouble Code: P0724



TCC Brake Switch Circuit High Input (4T65-E)

Possible Causes:



Check for ABS trouble codes (they can cause this code to set)
 
TCC brake switch circuit is shorted to system power
 
TCC brake switch is out of adjustment or damaged
 
PCM has failed
 

Trouble Code: P0730



Incorrect Gear Ratio (4T65-E)

Possible Causes:



ATF level is too low, or the fluid is burnt or contaminated
 
ISS or OSS signal circuit has an intermittent fault condition
 
Inspect for debris in the transmission pan or internal damaged
 
Possible vehicle overloading, exceeding the trailer towing limit, or towing in overdrive events occurred (discuss with customer)
 
TSB 02-07-30-022A contains a repair procedure for this code
 

Trouble Code: P0741



TCC System Stuck Off - Mechanical (4T65-E)

Possible Causes:



ATF level is too low, or the fluid is burnt or contaminated
 
Inspect transmission lines to radiator for bends or restrictions
 
Oil pressure screen is clogged or debris in the oil pan
 
TCC control valve is stuck "off" due to sediment or binding
 
TCC regulator valve is stuck "off" due to sediment or binding
 
TCC solenoid valve O-ring or turbine shaft seals leaking or cut
 
TSB 00-07-30-007A contains a repair procedure for this code
 

Trouble Code: P0742



Torque Converter Clutch Circuit Stuck On (4T65-E)

Possible Causes:



TCC PWM solenoid valve for the fluid exhaust is restricted
 
TCC regulated apply valve is stuck in the TCC apply position
 
TCC control valve is stuck in the TCC apply position
 
TCC feed limit valve is stuck (i.e., the TCC feed limit pressure, and the TCC release pressure to be low or nonexistent)
 
Pressure regulator valve is stuck
 
TCC fluid circuits leaking or abnormally low/high line pressure
 
TCC release switch circuit is shorted to ground
 
TSB 00-07-30-007A contains a repair procedure for this code
 

Trouble Code: P0748



Pressure Control Solenoid Circuit Malfunction (4T65-E)

Possible Causes:



PC solenoid high side circuit is open, shorted to ground or B+
 
PC solenoid low side circuit is open, shorted to ground or to B+
 
PC solenoid high or low side driver is damaged or has failed
 
TSB 00-07-30-002B contains a repair procedure for this code
 

Trouble Code: P0751



A/T 1-2 Shift Solenoid - No 1st or 4th Gear (4T65-E)

Possible Causes:



ATF is burnt or contaminated
 
Transmission has an internal malfunction.
 
Shift solenoid valve seals are damaged
 
Transmission has failed
 

Trouble Code: P0752



A/T 1-2 Shift Solenoid- No 2nd Or 3rd Gear (4T65-E)

Possible Causes:



ATF is burnt or contaminated
 
Transmission has plugged or restricted fluid circuits
 
Shift solenoid valve seals are leaking or damaged
 
Transmission has failed
 

Trouble Code: P0753



A/T 1-2/3 Shift Solenoid Circuit Malfunction (4T65-E)

Possible Causes:



1-2/3 shift solenoid control circuit is open or shorted to ground
 
1-2/3 shift solenoid control circuit is shorted to system power
 
1-2/3 shift solenoid is damaged or has failed
 
PCM has failed
 
TSB 02-07-30-022A contains a repair procedure for this code
 

Trouble Code: P0756



2-3 Shift Solenoid - No 3rd Or 4th Gear (4T65-E)

Possible Causes:



ATF is burnt or contaminated
 
Transmission has plugged or restricted fluid circuits
 
Shift solenoid valve seals are leaking or damaged
 
Transmission has failed
 
TSB 02-07-30-13 contains a repair procedure for this code
 

Trouble Code: P0756



A/T 2-3 Shift Solenoid- No 2nd Or 3rd Gear (4T65-E)

Possible Causes:



ATF is burnt or contaminated
 
Transmission has plugged or restricted fluid circuits
 
Shift solenoid valve seals are leaking or damaged
 
Transmission has failed
 
TSB 02-07-30-13 contains a repair procedure for this code
 

Trouble Code: P1106



MAP Sensor Circuit Intermittent High Input

Possible Causes:



MAP sensor signal circuit is shorted to VREF (intermittent fault)
 
MAP sensor ground circuit is open (intermittent fault)
 
MAP sensor is damaged or has failed (intermittent fault)
 
PCM has failed
 

Trouble Code: P1107



MAP Sensor Circuit Intermittent Low Input

Possible Causes:



MAP sensor signal circuit shorted to ground (intermittent fault)
 
MAP sensor VREF circuit is open (intermittent fault)
 
MAP sensor is damaged or has failed (intermittent fault)
 
PCM has failed
 

Trouble Code: P1111



IAT Sensor Circuit Intermittent High Input

Possible Causes:



IAT sensor signal circuit is open (intermittent fault)
 
IAT sensor ground circuit is open (intermittent fault)
 
IAT sensor is damaged (an intermittent "open" condition)
 
PCM has failed
 

Trouble Code: P1112



IAT Sensor Circuit Intermittent Low Input

Possible Causes:



IAT sensor signal circuit is shorted to ground (intermittent fault)
 
IAT sensor is damaged (an intermittent "shorted" condition)
 
PCM has failed
 

Trouble Code: P1114



ECT Sensor Circuit Intermittent Low Input

Possible Causes:



ECT sensor signal circuit shorted to ground (intermittent fault)
 
ECT sensor has failed (possible intermittent shorted condition)
 
PCM has failed
 

Trouble Code: P1115



ECT Sensor Circuit Intermittent High Input

Possible Causes:



ECT sensor signal circuit is open between the sensor and PCM
 
ECT sensor ground circuit is open between sensor and PCM
 
ECT sensor has failed (possible intermittent "open" condition)
 
PCM has failed
 

Trouble Code: P1121



TP Sensor Circuit Intermittent High Input

Possible Causes:



TP sensor connector is damaged, loose or open
 
TP sensor signal circuit is shorted to VREF (intermittent fault)
 
TP sensor ground circuit is open (an intermittent fault)
 
TP sensor is damaged or has failed (possible intermittent open)
 
PCM has failed
 

Trouble Code: P1122



TP Sensor Circuit Intermittent Low Input

Possible Causes:



TP sensor connector is damaged or shorted
 
TP sensor signal circuit is shorted to ground (intermittent fault)
 
TP sensor VREF circuit is open or grounded (intermittent fault)
 
TP sensor is damaged or has failed (possible intermittent short)
 
PCM has failed
 

Trouble Code: P1133



HO2S-11 (Bank 1 Sensor 1) Insufficient Switching

Possible Causes:



Air leaks present in the exhaust manifold or the exhaust pipes
 
Fuel pressure is too high (i.e., causing a rich air fuel mixture)
 
HO2S may be contaminated (due to improper fuel or silicone)
 
HO2S signal high or low reference circuit has high resistance
 
HO2S heater element has failed, or the heater circuit is open
 
PCM has failed
 

Trouble Code: P1134



HO2S-11 (Bank 1 Sensor 1) Transition Time Ratio

Possible Causes:



Air leaks present in the exhaust manifold or the exhaust pipes
 
Fuel pressure is too high (i.e., causing a rich air fuel mixture)
 
HO2S may be contaminated (due to improper fuel or silicone)
 
HO2S signal high or low reference circuit has high resistance
 
HO2S heater element has failed, or the heater circuit is open
 
PCM has failed
 

Trouble Code: P1189



Engine Oil Pressure Switch Circuit Malfunction

Possible Causes:



EOP switch circuit is open between the sensor and the PCM
 
Engine oil pressure switch is damaged (possible open circuit)
 
PCM has failed
 

Trouble Code: P1336



CKP Sensor System Variation Not Learned

Possible Causes:



Set the parking brake and block the drive wheels for safety.
 
Verify the hood is closed.
 
Read the trouble codes. If a code is set, refer to that code.
 
Start the engine. Allow engine temperature to reach at least 158ºF (70ºC). Then key off.
 
Select Crankshaft Position Variation Learn procedure on Scan Tool & start the vehicle.
 
Apply the brake pedal firmly and verify the selector is in Park.
 
Increase accelerator pedal position until fuel cutoff is reached at the test rpm (e.g., 5150). Quickly release the accelerator pedal after fuel cutoff is reached. The CKP system variation compensating values are learned when the engine speed (rpm) decreases back to idle speed and the procedure terminates.
 
Read the trouble codes and recheck for DTC P1336.
 
If DTC P1336 runs and passes, the CKP system variation "learn" procedure is complete. If not, look for other codes. If no codes are set, repeat the test procedure.
 

Trouble Code: P1351



Ignition Coil Timing Circuit High Input

Possible Causes:



IC signal circuit is open, shorted to ground or shorted to power
 
IC module has failed
 

Trouble Code: P1352



Ignition Signal Circuit High Input

Possible Causes:



IC signal circuit is open
 
IC module has failed
 
PCM has failed
 

Trouble Code: P1361



ICM Ignition Control Circuit Low Input

Possible Causes:



IC timing signal circuit or control circuit is shorted to ground or shorted to power
 
IC module has failed, or the PCM has failed
 

Trouble Code: P1374



CKP Sensor High To Low Resolution Frequency Correlation

Possible Causes:



IC 3X signal wire is routed to close to the Generator, spark plug wires or any other possible cause of EMI/RFI interference
 
IC 3X signal circuit is open, shorted to ground or shorted to B+
 
IC module is damaged or has failed
 
PCM has failed
 

Trouble Code: P1404



EGR Valve Closed Position Signal Range/Performance

Possible Causes:



EGR sensor signal circuit is open, shorted to ground or VREF
 
EGR sensor ground circuit is open or it has high resistance
 
EGR sensor is damaged or it has failed (sensor/solenoid unit)
 
EGR valve pintle or valve seat contains carbon deposits
 
PCM has failed
 

Trouble Code: P1441



EVAP System Flow During Non-Purge

Possible Causes:



An improperly installed or damaged EVAP canister purge valve
 
A temporary blockage in the EVAP canister purge valve, purge pipe, or EVAP canister
 
FTP sensor is out-of-calibration, damaged or "skewed"
 
Purge solenoid valve is damaged or has failed
 
PCM has failed
 

Trouble Code: P1554



Cruise Engaged Circuit High Input

Possible Causes:



Cruise control inhibit circuit is open or shorted to ground
 
SMCC II cruise control module is damaged or has failed
 
PCM has failed
 

Trouble Code: P1573



PCM & EBTCM Serial Data Circuit Malfunction

Possible Causes:



Serial data circuit is open between the EBTCM and the PCM
 
EBTCM has failed
 

Trouble Code: P1585



Cruise Control Inhibit Output Circuit Malfunction

Possible Causes:



Cruise control inhibit circuit is shorted to system voltage
 
Cruise control inhibit circuit is open or shorted to ground
 
Cruise control module power circuit is open (test CR CNT fuse)
 
Cruise control module is damaged or has failed
 
PCM has failed
 

Trouble Code: P1626



Theft Deterrent System Fuel Enable Signal Lost

Possible Causes:



The most likely cause of this code is lost communications
 
If the engine starts and stalls, refer to VTD system diagnosis
 
Perform the Powertrain Onboard Diagnostic System Check
 

Trouble Code: P1630



Theft Deterrent Learn Mode Active

Possible Causes:



Refer to Programming the Theft Deterrent System
 
Perform the Powertrain Onboard Diagnostic System Check
 

Trouble Code: P1631



Theft Deterrent Fuel Enable Signal Not Correct

Possible Causes:



Refer to Diagnostic System Check for Body Control Systems
 
Perform the Powertrain Onboard Diagnostic System Check
 

Trouble Code: P1635



5-Volt Reference 'A' Circuit Malfunction

Possible Causes:



5v VREF circuit is shorted to sensor ground or chassis ground
 
5v VREF circuit, MAP or FTP sensor circuit is shorted to (B+)
 
5v VREF circuit shorted to EGR sensor High signal circuit
 
EGR solenoid valve (and sensor) is damaged or has failed
 
PCM has failed
 

Trouble Code: P1639



5-Volt Reference 'B' Circuit Malfunction

Possible Causes:



A/C refrigerant pressure sensor VREF circuit is open, shorted to ground or shorted to system power
 
A/C refrigerant pressure sensor is damaged or PCM has failed
 
TSB 61-65-61 contains a repair procedure for this code
 

Trouble Code: P1640



Output Driver 1 Input Voltage High Input

Possible Causes:



EVAP Vent control circuit open, shorted to ground or to B+
 
Fan relay 1 control circuit is open, shorted to ground or to B+
 
Fan relay 2 or 3 control circuit is open, shorted to ground or B+
 
PCM has failed
 

 
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