Silverado 2008

4.8L V8 VIN C Auto 14

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Trouble Code: P02E7



Diesel Intake Air (IA) Flow Position Sensor Performance

Possible Causes:



The difference between the desired IA Valve position and the actual IA Valve position is more than 3 percent for 10 seconds.
 

Trouble Code: P02E8



Diesel Intake Air (IA) Flow Position Sensor Circuit Low Voltage

Possible Causes:



P02E8
 
The IAF valve position is less than 0.102 volt for 3 seconds.
 

Trouble Code: P02E9



Diesel Intake Air (IA) Flow Position Sensor Circuit High Voltage

Possible Causes:



P02E9
 
The IAF valve position is greater than 4.75 volts for 3 seconds.
 

Trouble Code: P0300



Multiple Engine Misfire Detected

Possible Causes:



Base engine mechanical fault that affects one or more cylinders
 
Fuel metering fault that affects more than one cylinder
 
Fuel pressure too low or too high, fuel supply contaminated
 
EVAP system problem or the EVAP canister is fuel saturated
 
EGR valve is stuck open or the PCV system has a vacuum leak
 
IC control circuit is shorted to ground (an intermittent fault)
 
Ignition system fault (a coil) that affects more than one cylinder
 
MAF sensor contamination (it can cause a very lean condition)
 

Trouble Code: P0301



Cylinder 1 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 1
 
Fuel delivery component fault that affects only Cylinder 1 (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 1
 

Trouble Code: P0302



Cylinder 2 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 2
 
Fuel delivery component fault that affects only Cylinder 2 (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 2
 

Trouble Code: P0303



Cylinder 3 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 3
 
Fuel delivery component fault that affects only Cylinder 3 (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 3
 

Trouble Code: P0304



Cylinder 4 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 4
 
Fuel delivery component fault that affects only Cylinder 4 (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 4
 

Trouble Code: P0305



Cylinder 5 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 5
 
Fuel delivery component fault that affects only Cylinder 5 (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 5
 

Trouble Code: P0306



Cylinder 6 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 6
 
Fuel delivery component fault that affects only Cylinder 6 (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 6
 

Trouble Code: P0307



Cylinder 7 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 7
 
Fuel delivery component fault that affects only Cylinder 7 (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 7
 

Trouble Code: P0308



Cylinder 8 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCV system
 
Base engine mechanical fault that affects only Cylinder 8
 
Fuel delivery component fault that affects only Cylinder 8 (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil, plug) that affects only Cylinder 8
 

Trouble Code: P0313



Misfire Detected With Low Fuel Level

Possible Causes:



Damaged reluctor wheel
 
Damaged accessory drive component or belt
 
Certain rough road conditions
 
Variable thickness brake rotors
 
Tire or wheel that is out of round or out of balance
 
Engine vacuum leaks
 
Fuel pressure that is too low or too high
 
Contaminated fuel
 
Restricted exhaust system
 

Trouble Code: P0324



Knock Sensor (KS) Module Performance

Possible Causes:



P0324
 
The ECM has detected an internal circuitry fault.
 

Trouble Code: P0324



Knock Sensor (KS) Module Performance

Possible Causes:



P0324
 
The ECM has detected an internal circuitry fault for greater than 5 s.
 

Trouble Code: P0325



Knock Sensor (KS) Circuit Bank 1

Possible Causes:



P0325 or P0330
 
The KS signal circuits are open or shorted together for 5 seconds.
 

Trouble Code: P0325



Knock Sensor (KS) Circuit Bank 1

Possible Causes:



P0325 and P0330
 
The KS signal circuits are open or shorted together for greater than 5 s.
 

Trouble Code: P0326



Knock Sensor (KS) Performance

Possible Causes:



P0326
 
The KS signal indicates an engine knock is present.
 
The ECM has commanded the spark retard to a value which is more than the calibrated valve, for a specific engine load and speed.
 
The above conditions exist for more than 5 seconds.
 

Trouble Code: P0326



Knock Sensor (KS) Performance

Possible Causes:



P0326
 
The KS signal indicates an engine knock is present.
 
The ECM has commanded the spark retard to a value, which is more than the calibrated value, for a specific engine load and speed.
 
The above conditions exist for more greater than 5 s.
 

Trouble Code: P0327



Knock Sensor Circuit Low Input (Bank 1)

Possible Causes:



Knock sensor signal circuit is open, shorted to ground or power
 
Knock sensor ground circuit is open (check for proper torque)
 
Knock sensor is damaged or has failed
 
ECM has failed
 

Trouble Code: P0328



Knock Sensor Circuit Low Input (Bank 1)

Possible Causes:



Knock sensor signal circuit is open, shorted to ground or power
 
Knock sensor ground circuit is open (check for proper torque)
 
Knock sensor is damaged or it has failed
 
ECM has failed
 

Trouble Code: P0330



Knock Sensor (KS) Circuit Bank 2

Possible Causes:



P0325 or P0330
 
The KS signal circuits are open or shorted together for 5 seconds.
 

Trouble Code: P0330



Knock Sensor (KS) Circuit Bank 2

Possible Causes:



P0325 and P0330
 
The KS signal circuits are open or shorted together for greater than 5 s.
 

Trouble Code: P0331



Knock Sensor (KS) Circuit Low Voltage (Bank 2)

Possible Causes:



KS circuits A and B for a short to ground or an open/high resistance
 
KS circuits A and B for a short to voltage
 
KS sensor has failed
 
ECM has failed
 

Trouble Code: P0332



Knock Sensor Circuit Malfunction (Bank 2)

Possible Causes:



Knock sensor signal circuit is open, shorted to ground or power
 
Knock sensor ground circuit is open (i.e., not mounted properly)
 
Knock sensor is damaged or has failed
 
On modules with an integrated sensor, clear the codes and retest for codes. If the same code resets, the ECM has failed.
 

Trouble Code: P0333



Crankshaft Position (CKP) Sensor Circuit

Possible Causes:



CKP sensor low reference circuit for an open/high resistance
 
CKP sensor 5-volt reference circuit for an open/high resistance or short to ground
 
CKP sensor 5-volt reference circuit for a short to voltage
 
CKP sensor signal circuit for an open/high resistance or short to ground
 
CKP sensor signal circuit for a short to voltage
 
CKP sensor has failed
 
ECM has failed
 

Trouble Code: P0335



CKP Sensor Circuit Malfunction

Possible Causes:



CKP sensor signal circuit is open or shorted to ground
 
CKP sensor ground (low reference) circuit is open
 
CKP sensor power circuit is open between sensor and the ECM
 
Crankshaft reluctor wheel is damaged or improper installation
 
ECM has failed
 

Trouble Code: P0335



Crankshaft Position Sensor Circuit Malfunction

Possible Causes:



CKP sensor signal circuit is open or shorted to ground
 
CKP sensor VREF circuit is open between the sensor and ECM
 
CKP sensor ground (Low Reference) circuit is open
 
CKP sensor is damaged or it failed (check crankshaft reluctor)
 
ECM has failed
 

Trouble Code: P0336



Crankshaft Reference 24X Circuit Malfunction

Possible Causes:



CKP sensor signal circuit is open or shorted to ground
 
CKP sensor ground (Low Reference) circuit is open
 
CKP sensor is damaged or it failed (check crankshaft reluctor)
 
ECM has failed
 

Trouble Code: P0338



Camshaft Position (CMP) Sensor Circuit

Possible Causes:



CMP sensor 5-volt reference circuit for an open/high resistance or short to ground
 
CMP sensor 5-volt reference circuit for a short to voltage
 
CMP sensor signal circuit for an open/high resistance or short to ground
 
CMP sensor signal circuit for a short to voltage
 
CKP sensor has failed
 
ECM has failed
 

Trouble Code: P0340



Camshaft Position Sensor Circuit

Possible Causes:



Note: The ECM detects engine movement by sensing the airflow through the MAF sensor, when airflow is greater than 3 grams per second, or by sensing crankshaft position sensor pulses.
 
The ECM detects that the starter is commanded on and the engine has been cranking for more than 4 s without a camshaft position sensor pulse.
 
The ECM detects that the engine has started, but did not receive a camshaft position sensor pulse during the first engine revolution.
 
The ECM detects that the engine is running, but does not receive a camshaft position sensor pulse for 800 of 1000 engine cycles.
 

Trouble Code: P0340



Camshaft Position Sensor Circuit

Possible Causes:



The ECM detects that the starter is commanded on and the engine has been cranking for greater than 4 s without a camshaft position sensor pulse.
 
The ECM detects that the engine has started, but did not receive a camshaft position sensor pulse during the first engine revolution.
 
The ECM detects that the engine is running, but does not receive a camshaft position sensor pulse for 800 of 1000 engine cycles.
 

Trouble Code: P0340



Camshaft Position (CMP) Sensor Circuit

Possible Causes:



The ECM does not see a CMP sensor signal for more than 2 seconds.
 

Trouble Code: P0341



Intake Camshaft Position (CMP) Sensor Performance

Possible Causes:



Camshaft reluctor wheel for damage
 
Timing chain, tensioner, and sprockets for wear or damage.
 
CMP has failed
 
ECM has failed
 

Trouble Code: P0342



CMP Sensor Circuit Low Input

Possible Causes:



Camshaft reluctor wheel is damaged or foreign material present
 
CMP sensor signal circuit is open, shorted to ground or VREF
 
CMP sensor is contacting the reluctor wheel or is damaged
 
ECM has failed
 

Trouble Code: P0343



CMP Sensor Circuit High Input

Possible Causes:



CMP sensor connector is damaged, loose or shorted
 
CMP sensor low reference circuit is open or shorted to VREF
 
Camshaft reluctor wheel is damaged or foreign material present
 
CMP sensor is contacting the reluctor wheel or is damaged
 
ECM has failed
 

Trouble Code: P0346



Intake Camshaft Position (CMP) Sensor Circuit Low Voltage Bank 2

Possible Causes:



Low reference circuit for an open/high resistance or for a short to voltage
 
5 volt reference circuit for an open/high resistance
 
Short to voltage in the signal circuit
 
Short to ground or an open/high resistance in the signal circuit.
 
CMP has failed
 
ECM has failed
 

Trouble Code: P0347



Intake Camshaft Position (CMP) Sensor Circuit High Voltage (Bank 2)

Possible Causes:



Low reference circuit for an open/high resistance or for a short to voltage
 
5 volt reference circuit for an open/high resistance
 
Short to voltage in the signal circuit
 
Short to ground or an open/high resistance in the signal circuit.
 
CMP has failed
 
ECM has failed
 

Trouble Code: P0348



Ignition Coil 1 Control Circuit

Possible Causes:



Ignition coil
 
ECM has failed
 

Trouble Code: P0351



Ignition Coil 1 Control Circuit

Possible Causes:



Ignition coil
 
ECM has failed
 

 
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