AutoCodes – GMC – P0336 2014 GMC Sierra

P0336 2014 GMC Sierra Code - Crankshaft Position Sensor Performance

Quick Answer

The crankshaft position sensor is an internally magnetic biased digital output integrated circuit sensing device. Common causes include Faulty Crankshaft Position Sensor, Crankshaft Position Sensor harness is open or shorted, Crankshaft Position Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0336 2014 GMC Sierra indicates Crankshaft Position Sensor Performance.
Common causes: Common causes include Faulty Crankshaft Position Sensor, Crankshaft Position Sensor harness is open or shorted, Crankshaft Position Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 366

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0336 2014 GMC Sierra Description

The crankshaft position sensor is an internally magnetic biased digital output integrated circuit sensing device. The sensor detects magnetic flux changes in the teeth and slots of the reluctor wheel on the crankshaft. The reluctor wheel is spaced at 60-tooth spacing, with two missing teeth for the reference gap. The reference gap is used to identify the crankshaft position at each start-up. The crankshaft position sensor produces an ON/OFF DC voltage of varying frequency, with 58 output pulses per crankshaft revolution. The crankshaft position sensor sends a digital signal to the ECM as each tooth on the reluctor wheel rotates past the crankshaft position sensor. The ECM uses each crankshaft position signal pulse to determine the crankshaft speed position. This information is then used to determine the optimum ignition and injection points of the engine. The ECM also uses crankshaft position sensor output information to determine the camshaft's relative position to the crankshaft, control camshaft phasing, and detect cylinder misfire.
The ECM also has a dedicated replicated crankshaft position sensor signal output circuit that may be used as an input signal to other modules for monitoring engine RPM.
The Diagnostic Trouble Code (DTC) will be set when the Crankshaft Position Sensor signal is not detected by the ECM during the first few seconds of engine cranking.

OBDII Code P0336 2014 GMC Sierra - Crankshaft Position Sensor Performance - AutoCodes.com — P0336 2014 GMC Sierra Code - Crankshaft Position Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P0336 2014 GMC Sierra?

Faulty Crankshaft Position Sensor
Crankshaft Position Sensor harness is open or shorted
Crankshaft Position Sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)
Signal plate may be damaged
Dead or weak battery

How to Fix the DTC P0336 2014 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0336 2014 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0336 2014 GMC Sierra code?

Need more information on how to fix the P0336 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0336 2014 GMC Sierra Code

What does the OBDII code P0336 mean on a 2014 GMC Sierra?

Code P0336 indicates an issue with the crankshaft position sensor's performance or circuit, which monitors the crankshaft's position and rotational speed.

What are the symptoms of code P0336 on a 2014 GMC Sierra?

Symptoms may include difficulty starting the engine, rough idling, engine stalling, misfires, reduced power, or the Check Engine Light being illuminated.

What causes the P0336 code on a 2014 GMC Sierra?

Common causes include a faulty crankshaft position sensor, damaged wiring or connectors, a misaligned or damaged reluctor ring, or issues with the engine’s timing.

Can I drive my 2014 GMC Sierra with a P0336 code?

Driving with a P0336 code is not recommended as it may lead to engine stalling, poor performance, or further damage to the vehicle's components.

How do I diagnose the P0336 code on my 2014 GMC Sierra?

Use an OBDII scanner to confirm the code, inspect the crankshaft position sensor and its wiring for damage, and check the reluctor ring for alignment or wear.

How do I fix the P0336 code on a 2014 GMC Sierra?

Common fixes include replacing the crankshaft position sensor, repairing or replacing damaged wiring or connectors, or addressing issues with the reluctor ring.

What tools are needed to repair a P0336 code on a 2014 GMC Sierra?

You may need an OBDII scanner, multimeter, basic hand tools, and potentially a replacement crankshaft position sensor.

How much does it cost to repair a P0336 code on a 2014 GMC Sierra?

Costs vary but typically range from $100 to $300, depending on whether the crankshaft position sensor or wiring needs replacement.

Can a failing crankshaft position sensor cause other problems?

Yes, a failing sensor can lead to engine misfires, poor fuel economy, increased emissions, or even complete engine failure if not addressed.

Is it necessary to reprogram the ECM after replacing the crankshaft position sensor?

In some cases, a relearn procedure may be required to synchronize the new sensor with the engine control module. Check the repair manual or consult a professional mechanic.