Engine-Codes.com
Engine-Codes – GMC – P0633 2017 GMC Sierra

P0633 2017 GMC Sierra Code - Immobilizer Key Not Programmed

Quick Answer

The P0633 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that the immobilizer key is not programmed. Common causes include Incorrectly programmed key, Damaged transponder chip in the key, Faulty immobilizer system. 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
P0633 2017 GMC Sierra indicates Immobilizer Key Not Programmed.
Common causes
Common causes include Incorrectly programmed key, Damaged transponder chip in the key, Faulty immobilizer system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0633 2017 GMC Sierra Description

The P0633 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that the immobilizer key is not programmed. The immobilizer system is a security feature in modern vehicles that prevents the engine from starting unless the correct key is used. When this code is triggered, it means that the key being used is not recognized by the vehicle's immobilizer system, leading to a no-start condition.

OBDII Code P0633 2017 GMC Sierra - Immobilizer Key Not Programmed
P0633 2017 GMC Sierra Code - Immobilizer Key Not Programmed

Common Causes of P0633 2017 GMC Sierra

  1. Incorrectly programmed key
  2. Damaged transponder chip in the key
  3. Faulty immobilizer system
  4. Wiring issues between the key and immobilizer system
  5. ECM software malfunction

Symptoms of P0633 2017 GMC Sierra

  1. Engine cranks but does not start
  2. Immobilizer warning light illuminated on the dashboard
  3. Inability to start the engine with the key
  4. Vehicle goes into anti-theft mode

How to Fix P0633 2017 GMC Sierra

  1. Check the key: Ensure that the key being used is the correct one for the vehicle and that it is not damaged. If necessary, try using a spare key to see if the issue persists.
  2. Reprogram the key: If the key is found to be the problem, it may need to be reprogrammed by a professional locksmith or dealership to sync it with the vehicle's immobilizer system.
  3. Check immobilizer system: If the key is not the issue, the immobilizer system itself should be inspected for any faults or malfunctions. This may require specialized diagnostic equipment.
  4. Repair wiring: If there are wiring issues between the key and immobilizer system, these should be repaired or replaced as needed to ensure proper communication.
  5. Update ECM software: In some cases, updating the ECM software may resolve the issue, especially if it is related to a software glitch.

Cost to Fix P0633 2017 GMC Sierra

The cost of repairing a P0633 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. On average, the cost of reprogramming a key can range from $50 to $150, while diagnosing and repairing faults in the immobilizer system may cost between $100 and $500. It's important to note that labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple sources to get an accurate estimate. Additionally, dealership rates may be higher than independent shops, so it's worth exploring all options for the most cost-effective solution.

What does this mean?

Tech Notes for P0633 2017 GMC Sierra

DTC P0633 will clear upon a successful engine start. Any malfunction that will cause a no-start condition will prevent DTC P0633 from clearing. Prior to diagnosing DTC P0633, ensure that all power moving, and engine control systems are operating properly and all conditions that may cause a no-start have been corrected. Do not replace the Engine Control Module (ECM). Replacing the Engine Control Module will not correct the no-start condition.

Need more information about the P0633 2017 GMC Sierra code?

Need more information on how to fix the P0633 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0633 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P0633 2017 GMC Sierra Code

No Frequently Asked Questions about P0633 2017 GMC Sierra Code found.

Discuss the causes and fixes for P0633 2017 GMC Sierra OBDII Code

Submit a New Comment

Code P0633 2017 GMC Sierra comments

No comments found for this page.