B3033 Chevrolet Code - Security System Indicates Tamper
Quick Answer
The Passlock™ system is provided in order to prevent vehicle theft if the ignition lock cylinder is forced to rotate or the ignition switch is operated while separated from the ignition lock cylinder case. Common causes include Faulty Passlockâ„¢ Sensor, Passlockâ„¢ Sensor harness is open or shorted, Passlockâ„¢ 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
- B3033 Chevrolet indicates Security System Indicates Tamper.
- Common causes
- Common causes include Faulty Passlockâ„¢ Sensor, Passlockâ„¢ Sensor harness is open or shorted, Passlockâ„¢ 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.
Code B3033 Chevrolet Description
When the correct key is used to start the vehicle, a magnet on the lock cylinder passes close to the Passlock™ sensor within the ignition lock cylinder case. The magnet activates the security hall effect sensor in the Passlock™ sensor which completes a circuit from the security sensor signal circuit through a resistor to the security sensor low reference circuit. The resistance value will vary from vehicle to vehicle. The BCM will measure the voltage on the security sensor signal circuit and compare this voltage to a previously learned voltage. If the voltage measured is within the valid range, the BCM will send a class 2 message to the Powertrain Control Module (PCM) to enable vehicle starting. If the voltage measured is not within the valid range, a class 2 message will be sent to the PCM to disable starting of the vehicle.
What are the Possible Causes of the DTC B3033 Chevrolet?
- Faulty Passlockâ„¢ Sensor
- Passlockâ„¢ Sensor harness is open or shorted
- Passlockâ„¢ Sensor circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3033 Chevrolet?
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 B3033 Chevrolet 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 B3033 Chevrolet code?
Need more information on how to fix the B3033 Chevrolet code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B3033 Chevrolet code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B3033 Chevrolet Code
1. What are the common symptoms of OBDII code B3033 in a Chevrolet related to the security system indicating tamper?
- Common symptoms include the security light staying on or flashing, inability to start the vehicle, and the vehicle going into anti-theft mode.
2. What are the possible causes of OBDII code B3033 in a Chevrolet indicating a tamper in the security system?
- Possible causes include a faulty ignition key, issues with the ignition lock cylinder, a problem with the immobilizer system, or a malfunction in the body control module.
3. How can I diagnose the OBDII code B3033 in a Chevrolet related to the security system tamper issue?
- Diagnosing this code typically involves checking the ignition key, inspecting the ignition lock cylinder, testing the immobilizer system, and scanning the body control module for any stored fault codes.
4. Is it safe to continue driving my Chevrolet with the OBDII code B3033 indicating a security system tamper?
- It is not recommended to drive the vehicle with this issue as it may lead to starting or security system malfunctions, potentially leaving you stranded.
5. Can I reset the OBDII code B3033 in my Chevrolet indicating a tamper in the security system on my own?
- Resetting the code may temporarily resolve the issue, but it is important to diagnose and address the underlying cause to prevent the problem from recurring.
6. How much does it typically cost to repair the OBDII code B3033 related to the security system tamper in a Chevrolet?
- The cost of repair can vary depending on the cause of the issue, but it may involve replacing the ignition key, repairing the ignition lock cylinder, or reprogramming the immobilizer system.
7. Are there any DIY tips for addressing the OBDII code B3033 in a Chevrolet with a security system tamper indication?
- DIY tips may include checking the key for damage, ensuring it is the correct key for the vehicle, and inspecting the ignition lock cylinder for any visible issues before seeking professional help.
8. Can a locksmith help with resolving the OBDII code B3033 related to the security system tamper in a Chevrolet?
- A locksmith may be able to assist with key-related issues or ignition lock cylinder problems that are triggering the security system tamper indication.
9. Will disconnecting the battery reset the OBDII code B3033 indicating a tamper in the Chevrolet's security system?
- Disconnecting the battery may temporarily clear the code, but it is not a guaranteed solution as the underlying issue causing the security system tamper indication may still persist.
10. How long does it take to repair the OBDII code B3033 in a Chevrolet related to the security system tamper issue?
- The repair time can vary depending on the specific cause of the problem, but it may range from a quick fix to a more involved repair that could take several hours or more.
Discuss the causes and fixes for B3033 Chevrolet OBDII Code
Code B3033 Chevrolet comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
