B0963 - Understanding the Diagnostic Trouble Code for Powerliftgate Issues in Chevrolet and GMC Models

Quick Answer

B0963 means: B0963 indicates a fault in the power liftgate system, specifically in the control module or associated components.

Fix: Check and replace faulty components Cost: $250 - $400 Time: 90-180 minutes

Can I drive with B0963? It is advisable to address this issue soon to avoid further damage or safety hazards.

Common Questions

What does B0963 mean and how does it affect my car?

The B0963 code indicates a malfunction in your power liftgate system, which may mean that you cannot use the automatic feature to open or close the liftgate. This can affect your day-to-day convenience and potentially lead to safety issues if the liftgate operates unexpectedly.

What are the most common causes of B0963 and how much does it cost to fix?

Common causes include a faulty liftgate motor, damaged wiring, or malfunctioning switches. Repair costs can range from $50 for a switch replacement to $400 for a complete motor replacement, depending on the specific issue.

Can I drive my car with B0963 or should I stop immediately?

While you can technically drive your vehicle with the B0963 code, it's advisable to address the issue soon. An inoperative liftgate may lead to safety hazards, especially if it opens unexpectedly while driving.

How can I diagnose B0963 myself using GeekOBD APP?

To diagnose B0963 using the GeekOBD APP, connect the device to your vehicle's OBD2 port, run a full scan to retrieve the code, and analyze the freeze frame data for context. Look for abnormal readings related to the liftgate's operation.

What vehicles are most commonly affected by B0963?

The B0963 code is frequently seen in vehicles like the 2015-2020 Chevrolet Tahoe and GMC Yukon. If you own one of these models, be aware of this potential issue.

How can I prevent B0963 from happening again?

Regularly inspect your liftgate system for wear and tear, ensure that connections are clean and tight, and address any electrical issues promptly. Routine maintenance can help prevent future occurrences of the B0963 code.

What is B0963?

The DTC B0963 code indicates a malfunction in the power liftgate system, commonly found in vehicles like the 2015-2020 Chevrolet Tahoe and GMC Yukon. This code is triggered when the Body Control Module (BCM) detects a fault within the liftgate's operation, which may include issues with the liftgate motor, wiring, or switches. A malfunctioning power liftgate can lead to several inconveniences, such as the inability to open or close the liftgate automatically. In practical terms, this could mean struggling to load groceries or luggage into the rear of your vehicle or facing safety concerns if the liftgate unexpectedly opens while driving. The power liftgate system is designed to provide convenience but can be complex, integrating multiple components. If you see the B0963 code, it’s essential to address it promptly to avoid further complications and ensure the liftgate operates safely and efficiently. Diagnosing this issue typically requires specialized tools, such as the GeekOBD APP, to retrieve detailed fault codes and understand the broader context of the malfunction.

System: B - Body (Airbags, Lighting, Security, Climate Control)

Symptoms

Common symptoms when B0963 is present:

  • The power liftgate does not respond to the remote or interior switch; you may have to open it manually.
  • Intermittent operation of the liftgate, where it sometimes works but fails at other times, causing frustration.
  • Unusual noises from the liftgate motor, such as grinding or clicking, indicating potential mechanical failure.
  • The liftgate opens unexpectedly or gets stuck, which can pose safety risks.
  • Dashboard warning light illuminated, indicating an issue with the liftgate system.

Possible Causes

Most common causes of B0963 (ordered by frequency):

  1. The most common cause is a faulty liftgate motor, which has a likelihood of around 60%. This may occur due to wear and tear or electrical issues.
  2. Another common cause is damaged wiring or loose connections, which can disrupt the power supply to the liftgate system.
  3. A malfunctioning switch or control module can also trigger the B0963 code. Regular maintenance and inspections can help prevent these issues.
  4. Less commonly, a blown fuse in the power liftgate circuit can lead to this code, which is usually easy to fix.
  5. In rare cases, a software issue within the BCM may require a software update or reprogramming to resolve.

B0963 Repair Costs

Cost Breakdown by Repair Type

Liftgate Motor Replacement

Replacing a faulty liftgate motor to restore functionality.

  • Total: $250 - $400
  • Success rate: 85%
Wiring Repair

Repairing damaged wiring or loose connections that affect the liftgate's operation.

  • Total: $100 - $200
  • Success rate: 90%
Switch Replacement

Replacing the liftgate switch if it is found to be malfunctioning.

  • Total: $50 - $100
  • Success rate: 95%
Money-Saving Tips for B0963
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional B0963 Diagnosis Process

Follow these systematic steps to accurately diagnose B0963. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the liftgate motor and switch functionality (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the liftgate motor and switch functionality (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive vehicle under various conditions to confirm repair success (15-20 minutes)

Step 5: Road test verification - Drive vehicle under various conditions to confirm repair success (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Liftgate Motor Replacement on a 2018 Chevrolet Tahoe

Vehicle: 2018 Chevrolet Tahoe, 45,000 miles

Problem: Customer reported the liftgate failed to open using the remote or switch.

Diagnosis: Diagnostic testing revealed a B0963 code and confirmed a faulty liftgate motor.

Solution: Replaced the liftgate motor and reprogrammed the BCM as necessary.

Cost: $350 (including parts and labor)

Result: The liftgate functioned correctly post-repair, restoring full functionality.

Case Study 2: Wiring Repair on a 2017 GMC Yukon

Vehicle: 2017 GMC Yukon, 60,000 miles

Problem: Customer experienced intermittent liftgate operation.

Diagnosis: Inspection revealed damaged wiring leading to the liftgate motor, causing the B0963 code.

Solution: Repaired the wiring and secured loose connections to ensure reliable operation.

Cost: $150 (including parts and labor)

Result: Liftgate operated consistently after repair, and no further issues were reported.

Diagnose B0963

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
Download GeekOBD APP Get MOBD Adapter

Code Information

Code: B0963
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: MEDIUM
Category: Body Codes