B1271 2014 GMC Sierra Code - Theft Protection Active
Quick Answer
When the radio is initially installed in the vehicle, the radio receives Vehicle Identification Number (VIN) information via serial data. Common causes include Reprogram Radio, Faulty Radio. 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
- B1271 2014 GMC Sierra indicates Theft Protection Active.
- Common causes
- Common causes include Reprogram Radio, Faulty Radio.
- 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 B1271 2014 GMC Sierra Description
The radio theft deterrent system is intended to disable or limit radio functionality if incorrect vehicle information is received by radio. The radio disables functionality if the VIN information received by the radio does not match the VIN information that has been learned by the radio. This Diagnostic Trouble Code (DTC) is generated by the module when the Theft Protection is activated.
The DTC will be set when the radio receives the correct VIN information via serial data.
What are the Possible Causes of the DTC B1271 2014 GMC Sierra?
- Reprogram Radio
- Faulty Radio
How to Fix the DTC B1271 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 B1271 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 B1271 2014 GMC Sierra code?
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Frequently Asked Questions about B1271 2014 GMC Sierra Code
1. What does the OBDII code B1271 mean on a 2014 GMC Sierra?
The code B1271 indicates "Theft Protection Active," meaning the vehicle’s theft deterrent system has been triggered or is malfunctioning.
2. What are common symptoms of the B1271 code in a 2014 GMC Sierra?
Symptoms include the engine failing to start, the security light staying illuminated or flashing, and possible loss of communication with the body control module (BCM).
3. What causes the B1271 code to appear on a 2014 GMC Sierra?
Common causes include a malfunctioning theft deterrent module, a faulty ignition switch, issues with the BCM, damaged wiring, or a dead key fob battery.
4. How do I reset the theft deterrent system in a 2014 GMC Sierra?
Turn the key to the "On" position for 10 minutes until the security light turns off, turn the key off for 5 seconds, and then repeat the process two more times before starting the engine.
5. Can a dead key fob battery cause the B1271 code?
Yes, a dead or weak key fob battery can prevent the theft deterrent system from recognizing the key, triggering the code.
6. Is it safe to drive with the B1271 code active?
No, since the theft protection system may prevent the engine from starting, the vehicle is likely inoperable until the issue is resolved.
7. How do I diagnose the B1271 code on my 2014 GMC Sierra?
Use a diagnostic scanner capable of reading BCM codes, inspect the theft deterrent system components, check wiring for damage, and test the key fob and ignition switch.
8. How much does it cost to repair the B1271 code on a 2014 GMC Sierra?
Repair costs vary depending on the issue but may range from $100 to $500 for diagnostics, key fob replacement, or BCM repairs.
9. Can a faulty BCM cause the B1271 code on a 2014 GMC Sierra?
Yes, a malfunctioning Body Control Module (BCM) can disrupt the theft deterrent system and trigger the B1271 code.
10. Do I need to reprogram anything after fixing the B1271 code?
Yes, if components like the BCM or key fob are replaced, they may need to be reprogrammed to sync with the vehicle’s theft deterrent system.
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