P0513 2016 GMC Sierra Code - Immobilizer Key Incorrect
Quick Answer
The immobilizer system functions are provided by the Body Control Module (BCM) and the Engine Control Module (ECM), as well as any control modules that store and report the environment identifier. Common causes include Immobilizer Key not programmed to the vehicle, Faulty Immobilizer Key, Faulty Body Control Module (BCM). 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
- P0513 2016 GMC Sierra indicates Immobilizer Key Incorrect.
- Common causes
- Common causes include Immobilizer Key not programmed to the vehicle, Faulty Immobilizer Key, Faulty Body Control Module (BCM).
- 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.
Code P0513 2016 GMC Sierra Description
When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, the transponder in the key is energized by the immobilizer coil surrounding the ignition lock cylinder. This immobilizer coil is part of the immobilizer control module. The transponder transmits a signal that contains its unique value, which is received by the BCM through the immobilizer coil. The BCM then compares this value to a value stored in memory. The BCM also monitors various control modules to determine if the stored environment identifiers match.
If both the environment identifier and the value received from the transponder match, the BCM will send the prerelease password via serial data to the ECM. If the encrypted code's unique value is incorrect or the environment identifier does not match, the BCM will send the start to disable message to the ECM which will prevent the vehicle starter and fuel pump from operating.
When the ECM receives the BCM prerelease password, the ECM will challenge the password. The ECM sends this challenge to the BCM via serial data. Both the ECM and BCM perform a calculation on this challenge. If the BCM calculated response to the challenge equals the calculation performed by the ECM, the ECM will allow the vehicle to start.
The Diagnostic Trouble Code (DTC) will be set when the calculated response from the BCM does not equal the calculation performed by the ECM.
What are the Possible Causes of the DTC P0513 2016 GMC Sierra?
- Immobilizer Key not programmed to the vehicle
- Faulty Immobilizer Key
- Faulty Body Control Module (BCM)
How to Fix the DTC P0513 2016 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.
Code Tech Notes
There is a Factory Service Bulletin for the following Chevrolet models:
2010 Chevrolet Express
2011 Chevrolet Express
2011 Chevrolet Silverado
Chevrolet Factory Service Bulletin OBDII Code P0513
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0513 2016 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 P0513 2016 GMC Sierra code?
Need more information on how to fix the P0513 2016 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
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Frequently Asked Questions about P0513 2016 GMC Sierra Code
1. What does the OBDII code P0513 mean on a 2016 GMC Sierra?
P0513 indicates an issue with the immobilizer system, specifically that an incorrect or unrecognized key is being used.
2. What are the symptoms of code P0513 in a 2016 GMC Sierra?
Common symptoms include the engine not starting, the immobilizer warning light on the dashboard, or reduced engine performance.
3. What causes the P0513 code on a 2016 GMC Sierra?
Causes may include a faulty or unprogrammed key, a damaged key fob, issues with the immobilizer system, or a malfunctioning Engine Control Module (ECM).
4. Can a dead key fob battery trigger the P0513 code?
Yes, a dead or weak key fob battery can prevent the key from being recognized, which may trigger the P0513 code.
5. How do I fix the P0513 code on my 2016 GMC Sierra?
First, try using a spare key or replace the fob battery. If the issue persists, the key may need to be reprogrammed or the immobilizer system inspected by a professional.
6. Can I clear the P0513 code without fixing the issue?
Clearing the code without addressing the root cause will result in the code returning during the next start attempt or drive cycle.
7. Is a reprogramming tool needed to fix the P0513 code?
In some cases, yes. A dealership or qualified locksmith may need to reprogram the key or immobilizer system to resolve the issue.
8. Can the P0513 code damage my 2016 GMC Sierra?
No, the code itself won't cause damage, but it can prevent the vehicle from starting, leaving you stranded.
9. What should I check first when diagnosing a P0513 code?
Start by checking the key fob battery and trying a spare key. Then inspect for any physical damage to the key or ignition system.
10. Do I need to replace the ignition switch for a P0513 code?
Not necessarily. The ignition switch should only be replaced after confirming it’s the source of the issue through proper diagnostics.
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