AutoCodes – GMC – B2719 GMC

B2719 GMC Code - Trunk Tamper Switch Fault

Quick Answer

A test is run to determine if the trunk tamper switch is active when Platform Zone Module (PZM) is in an off, idle, ready to arm, arm initiated or arm delay state. Common causes include Faulty Trunk Tamper Switch, Trunk Tamper Switch harness is open or shorted, Trunk Tamper Switch 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: B2719 GMC indicates Trunk Tamper Switch Fault.
Common causes: Common causes include Faulty Trunk Tamper Switch, Trunk Tamper Switch harness is open or shorted, Trunk Tamper Switch 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 748

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2719 GMC Description

A test is run to determine if the trunk tamper switch is active when Platform Zone Module (PZM) is in an off, idle, ready to arm, arm initiated or arm delay state. DTC B2719 will set when PZM determines the trunk tamper switch has been active for 2 seconds. When DTC B2719 is set, UTD will still arm, disregarding input from the trunk tamper switch. DTC B2719 will clear when the trunk tamper switch is not active on the next ignition switch transition to RUN or CRANK position.

OBDII Code B2719 GMC - Trunk Tamper Switch Fault - AutoCodes.com — B2719 GMC Code - Trunk Tamper Switch Fault

What does this mean?

What are the Possible Causes of the DTC B2719 GMC?

Faulty Trunk Tamper Switch
Trunk Tamper Switch harness is open or shorted
Trunk Tamper Switch circuit poor electrical connection

How to Fix the DTC B2719 GMC?

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 B2719 GMC 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 B2719 GMC code?

Need more information on how to fix the B2719 GMC code? Get Access to Factory Service Manuals

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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 B2719 GMC Code

1. What are common symptoms of OBDII code B2719 GMC (Trunk Tamper Switch Fault)?

The common symptoms of code B2719 include the trunk not opening, false trunk open warnings, and issues with the vehicle alarm system.

2. What causes the OBDII code B2719 GMC to trigger?

The B2719 code typically triggers when there is a malfunction in the trunk tamper switch, which is responsible for detecting unauthorized access to the trunk.

3. How can I diagnose the Trunk Tamper Switch Fault causing code B2719?

Diagnosing the trunk tamper switch involves checking the switch for proper operation, inspecting the wiring for any damage, and testing the switch's signal to the vehicle's control module.

4. Can a faulty trunk tamper switch be repaired, or does it need to be replaced?

In most cases, a faulty trunk tamper switch will need to be replaced rather than repaired to resolve the B2719 code and restore proper trunk functionality.

5. Are there any temporary fixes for the Trunk Tamper Switch Fault code B2719?

Temporary fixes like disconnecting the trunk tamper switch or resetting the vehicle's computer may clear the code temporarily, but it is recommended to address the root cause by repairing or replacing the switch.

6. How important is it to address the OBDII code B2719 GMC (Trunk Tamper Switch Fault)?

Addressing code B2719 is important to ensure the proper functioning of the trunk, security system, and overall vehicle safety. Ignoring the issue may lead to inconvenience and potential security risks.

7. Can a DIY enthusiast fix the Trunk Tamper Switch Fault causing code B2719?

While some DIY enthusiasts may have the skills to replace the trunk tamper switch, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is resolved correctly.

8. Will resetting the OBDII system clear the B2719 code temporarily?

Resetting the OBDII system may clear the B2719 code temporarily, but if the underlying issue with the trunk tamper switch is not addressed, the code is likely to reappear.

9. How long does it typically take to replace a faulty trunk tamper switch?

Replacing a faulty trunk tamper switch can vary in time depending on the specific vehicle model and the location of the switch, but it generally takes around 1-2 hours for a mechanic to complete the task.

10. Is it safe to drive with the OBDII code B2719 GMC (Trunk Tamper Switch Fault) present?

While driving with the B2719 code present may not directly affect the vehicle's drivability, it is advisable to address the issue promptly to avoid potential trunk-related problems and security concerns.