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GMC Sierra Fault Codes


You can find common GMC Sierra fault codes on this page that when clicked take you to a detailed description.

You can also type in the fault code you are getting below to find a more detailed description.

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GMC Sierra Recalls

When a car manufacturer detects a problem with a model they put out a recall notice and more often than not offer to fix the problem free of charge.

You can check to see if your GMC Sierra has any recall notices on our sister site AutoRecalls.co, sorted by model year.

View GMC Sierra Recalls »
Recall Notice Icon
Severity Icon 3/10

Error Icon P0496

Evaporative Emission System High Purge Flow

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Severity Icon 8/10

Error Icon P0017

Crankshaft Position Camshaft Position Correlation Bank 1 Sensor B

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Severity Icon 8/10

Error Icon P0014

Exhaust Camshaft Position Timing - Over-Advanced (Bank 1)

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Severity Icon 3/10

Error Icon P0442

Evaporative Emission Control System Leak Detected

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Severity Icon 9/10

Error Icon P0011

Intake Camshaft Position Timing - Over-Advanced (Bank 1)

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Severity Icon 9/10

Error Icon P0700

Transmission Control System Malfunction

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Error Icon P0119

Engine Coolant Temperature Circuit Intermittent

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Error Icon P0019

Crankshaft Position Camshaft Position Correlation Bank 2 Sensor B

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Error Icon P0018

Crankshaft Position Camshaft Position Correlation Bank 2 Sensor A

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Severity Icon 7/10

Error Icon P0430

Catalyst System Efficiency Below Threshold (Bank 2)

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Severity Icon 4/10

Error Icon P0128

Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)

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Severity Icon 6/10

Error Icon P0174

System Too Lean (Bank 2)

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Severity Icon 7/10

Error Icon P0420

Catalyst System Efficiency Below Threshold (Bank 1)

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Severity Icon 7/10

Error Icon P0171

System Too Lean (Bank 1)

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Severity Icon 8/10

Error Icon P0106

Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem

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Error Icon P0336

Crankshaft Position Sensor A Circuit Range/Performance

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Error Icon P0497

Evaporative Emission System Low Purge Flow

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Error Icon P059f

Active Grille Air Shutter Performance

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Severity Icon 8/10

Error Icon P0016

Crankshaft Position Camshaft Position Correlation Bank 1 Sensor A

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Error Icon P0008

Engine Position System Performance - Bank 1

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Severity Icon 8/10

Error Icon P0301

Cylinder 1 Misfire Detected

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Severity Icon 9/10

Error Icon P0300

Random/Multiple Cylinder Misfire Detected

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Severity Icon 6/10

Error Icon P0138

O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)

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Severity Icon 8/10

Error Icon P0335

Crankshaft Position Sensor A Circuit Malfunction

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Error Icon P0989

Transmission Fluid Pressure Sensor/Switch E Circuit Low

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Error Icon P0050

Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 1

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Severity Icon 3/10

Error Icon P0456

Evaporative Emissions System Small Leak Detected

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Severity Icon 4/10

Error Icon P0449

Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction

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Error Icon P0324

Single Cylinder Misfire (Cylinder not Specified)

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Error Icon P0330

Knock Sensor 2 Circuit (Bank 2)

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Severity Icon 4/10

Error Icon P0455

System Gross Leak Evaporative Emission

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Error Icon P069e

Fuel Pump Control Module Requested MIL Illumination

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Error Icon P0627

Fuel Pump A Control Circuit / Open

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Error Icon P0752

Shift Solenoid A Stuck On

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Error Icon P0717

Input/Turbine Speed Sensor Circuit No Signal

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Severity Icon 8/10

Error Icon P0089

Fuel Pressure Regulator Performance

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Severity Icon 3/10

Error Icon P2099

Post Catalyst Fuel Trim System Too Rich Bank 2

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Severity Icon 7/10

Error Icon P0191

Fuel Rail Pressure Sensor Circuit Range/Performance

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Error Icon P1258

Pedal Correlation PDS1 and PDS2

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Error Icon P1467

A/C Compressor Temperature Sensor Malfunction

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Error Icon P1682

A/T FI Signal A High Input

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Error Icon P1516

IMRC Input Error (Bank 1)

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Error Icon P1174

Fuel Pump A Low Flow/Performance

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Severity Icon 7/10

Error Icon P2096

Post Catalyst Fuel Trim System Too Lean Bank 1

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Severity Icon 5/10

Error Icon P2187

System Too Lean at Idle DTC

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Error Icon P0391

Camshaft Position Sensor B Circuit Range/Performance (Bank 2)

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Error Icon P1400

DPFE Circuit Low Input

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Severity Icon 9/10

Error Icon P2138

Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation

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Severity Icon 7/10

Error Icon P219A

Bank 1 Air/Fuel Ratio Imbalance

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Error Icon P1870

Transmission Component Slipping/ Transmission Mechanical Transfer Case 4x4 Switch Circuit Failure

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Error Icon P20EE

SCR NOx Catalyst Efficiency Below Threshold

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Severity Icon 3/10

Error Icon P0446

Evaporative Emission Control System Vent Control Circuit Malfunction

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Severity Icon 9/10

Error Icon P2135

Throttle/Pedal Position Sensor/Switch A / B Voltage Correlation

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Severity Icon 8/10

Error Icon P0305

Cylinder 5 Misfire Detected

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Error Icon C0265

EBCM Motor Relay Circuit Low When On (Chevrolet)

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Error Icon P0443

Evaporative Emission Control System Purge Control Valve circuit Malfunction

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Severity Icon 7/10

Error Icon P0010

Intake Camshaft Position Actuator Circuit / Open (Bank 1)

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Severity Icon 7/10

Error Icon P0013

Exhaust Camshaft Position Actuator Circuit / Open (Bank 1)

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Error Icon U0101

Lost Communication with TCM

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Error Icon U0140

Lost Communication With Body Control Module

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Error Icon U1000

SCP (J1850) Invalid or Missing Data for Primary Id

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Severity Icon 9/10

Error Icon U0073

Control Module Communication Bus "A" Off

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Error Icon U0109

Lost Communication With Fuel Pump Control Module

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Severity Icon 9/10

Error Icon U0100

Lost Communication With ECM/PCM "A"

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Error Icon P1345

SGC (Cam Position) Sensor Circuit Malfunction/ Crankshaft Position - Camshaft Position Correlation

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Error Icon P1133

HO2S Insufficient Switching Sensor 1

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Error Icon P1175

Cam Control Fault

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Severity Icon 9/10

Error Icon P0012

Intake Camshaft Position Timing - Over-Retarded (Bank 1)

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Severity Icon 4/10

Error Icon P0036

Heated Oxygen Sensor (HO2S) Heater Control Circuit Bank 1 Sensor 2

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Severity Icon 4/10

Error Icon P0102

Mass or Volume Air Flow Circuit Low Voltage Input

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Severity Icon 8/10

Error Icon P0113

Intake Air Temperature Circuit High Input

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Severity Icon 6/10

Error Icon P0131

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)

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Severity Icon 7/10

Error Icon P0134

O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)

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Severity Icon 6/10

Error Icon P0135

O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

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Severity Icon 4/10

Error Icon P0137

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

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GMC Sierra Image
  • Manufacturer: GMC

About the Sierra

The GMC Sierra is a series of small, light-duty, and heavy-duty pickup trucks that first debuted in 1999, alongside its corporate cousin, the Chevrolet Silverado. There have been a total of four generations to be released, with the fourth and latest generation hitting the market in 2019.

The series ranges from the smallest Sierra 1500 and goes up to the heavy-duty 6500 HD.

The Sierra is nearly identical to its corporate cousin as it is essentially a rebadged version of the Silverado. It is also often compared to popular models from Ford’s F-150, the Dodge RAM, Nissan Titan, and Toyota Tundra.

In the two-plus decades that the model has been on the market, one of the most common issues it has faced is P0496. This code indicates that there is a high purge flow condition in the EVAP system.

One of the most common causes is a faulty or loose gas cap. This can be fixed by replacing or fastening the gas cap.

Another fault code that the model is known to suffer from is P0017. This serious code indicates that there is a correlation error between the signals from the exhaust camshaft position sensor in the first bank of the engine and the crankshaft position sensor.

One of the first steps for this code is checking that both position sensors are working properly. A faulty timing chain is another likely cause. However, old and dirty oil can also lead to this type of issue.

Another timing issue that the Sierra is known for is P0014, which indicates that the exhaust camshaft is too far ahead in its timing sequence.

This code can be a result of similar causes as the previous code. Other components to be known causes include a faulty camshaft variable timing solenoid and camshaft phaser.