B059D - Understanding the B059D Code in 2015-2020 Chevrolet, GMC, and Cadillac Models

Quick Answer

B059D means: B059D indicates a malfunction in the hood latch system, affecting vehicle safety.

Fix: Check and replace faulty components Cost: $120 - $250 Time: 90-180 minutes

Can I drive with B059D? Immediate attention is recommended to avoid safety risks.

Common Questions

What does B059D mean and how does it affect my car?

The B059D code signifies a problem with your car's hood latch system. This can lead to safety issues, such as the hood opening unexpectedly while driving, which can obstruct your view and increase the risk of an accident. Long-term neglect of this issue may also affect other vehicle systems connected to the hood latch, such as alarms.

What are the most common causes of B059D and how much does it cost to fix?

Common causes include a faulty hood latch sensor, wiring issues, and mechanical failures of the latch. Repair costs can vary, with hood latch replacements typically ranging from $120 to $250, and sensor replacements from $50 to $150.

Can I drive my car with B059D or should I stop immediately?

It's advisable to avoid driving your vehicle if the B059D code is present, as it indicates a potential safety hazard. If the hood latch is malfunctioning, the hood could open unexpectedly, which poses a serious risk on the road.

How can I diagnose B059D myself using GeekOBD APP?

You can use the GeekOBD APP to scan your vehicle's OBD2 system. The app will display the B059D code along with any freeze frame data that shows the conditions when the code was triggered. Look for any related codes and symptoms to help narrow down the issue.

What vehicles are most commonly affected by B059D?

The B059D code is frequently reported in models like the 2015-2020 Chevrolet Silverado, GMC Sierra, and Cadillac Escalade. It's essential to check for any manufacturer recalls or Technical Service Bulletins (TSBs) related to the hood latch system in these vehicles.

How can I prevent B059D from happening again?

Regular maintenance checks on your vehicle's electrical systems and latches can prevent the occurrence of B059D. Ensure that the hood latch is kept clean and lubricated, and inspect it during routine service intervals.

What is B059D?

The DTC B059D code is a diagnostic trouble code that indicates a problem with the 'Hood Latch/Lock' system. This code is commonly found in various models from Chevrolet, GMC, and Cadillac manufactured between 2015 and 2020. When the vehicle's onboard computer detects a malfunction in the hood latch system, it triggers the B059D code to alert the driver. The hood latch is a critical component that ensures the hood is securely closed while driving. If the latch is faulty, it may lead to the hood opening unexpectedly, posing a serious safety risk while driving. In addition, a malfunctioning hood latch can also affect other systems, such as the vehicle's alarm system or security features. Symptoms of a B059D code may include warning lights on the dashboard, such as the check engine light or the hood open indicator light. Addressing this issue promptly is crucial for maintaining vehicle safety and security. Regular maintenance checks, particularly for electrical components and latches, can help prevent the occurrence of this code. If ignored, it may lead to more significant issues down the line, including damage to the vehicle's bodywork or electrical systems.

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

Symptoms

Common symptoms when B059D is present:

  • Check engine light stays on constantly, indicating an underlying issue that needs addressing.
  • Hood open indicator light remains illuminated even when the hood is securely closed, suggesting a malfunction.
  • Unusual noises from the hood area while driving, which may indicate the latch is not functioning properly.
  • Difficulty in opening or closing the hood, which can lead to further complications if not resolved.
  • Warning messages on the dashboard related to security features may appear, indicating potential issues with the hood latch.

Possible Causes

Most common causes of B059D (ordered by frequency):

  1. Faulty hood latch sensor (45% likelihood) - This sensor often fails due to wear and tear, leading to incorrect readings.
  2. Wiring issues (30% likelihood) - Damaged or corroded wiring can disrupt communication between the sensor and the ECU.
  3. Mechanical failure of the hood latch (15% likelihood) - Dirt and debris can hinder the latch's operation, causing it to malfunction.
  4. Software issues (7% likelihood) - Occasionally, software glitches can lead to erroneous code triggering.
  5. Environmental factors (3% likelihood) - Extreme weather or exposure to moisture can cause electrical components to fail.

B059D Repair Costs

Cost Breakdown by Repair Type

Hood Latch Replacement

Replacing the faulty hood latch assembly to restore proper functioning.

  • Total: $120 - $250
  • Success rate: 90%
Sensor Replacement

Replacing the hood latch sensor if it's malfunctioning.

  • Total: $50 - $150
  • Success rate: 85%
Wiring Repair

Repairing or replacing damaged wires that affect the latch sensor.

  • Total: $30 - $100
  • Success rate: 80%
Money-Saving Tips for B059D
  • 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 B059D Diagnosis Process

Follow these systematic steps to accurately diagnose B059D. 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 to test the hood latch sensor for proper voltage and resistance (20-30 minutes)

Step 3: Component testing - Use a multimeter to test the hood latch sensor for proper voltage and resistance (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: Wiring check - Inspect wiring for any signs of damage or corrosion that may affect the signal (15-20 minutes)

Step 4: Wiring check - Inspect wiring for any signs of damage or corrosion that may affect the signal (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.
Step 5: Step 5: System function test - Verify proper operation after repairs and clear codes (10-15 minutes)

Step 5: 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.

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: Hood Latch Replacement on 2018 Chevrolet Silverado

Vehicle: 2018 Chevrolet Silverado 1500, 45,000 miles

Problem: Customer reported the check engine light was on, and the hood open indicator was illuminated.

Diagnosis: After scanning with the GeekOBD APP, the B059D code was retrieved. A visual inspection revealed a malfunctioning hood latch sensor.

Solution: The hood latch sensor was replaced, and the system was tested for proper operation.

Cost: $150 (sensor replacement $100 + labor $50)

Result: The check engine light was cleared, and the hood open indicator turned off, resolving the customer's concerns.

Case Study 2: Wiring Repair on 2019 GMC Sierra

Vehicle: 2019 GMC Sierra 1500, 30,000 miles

Problem: Customer experienced intermittent hood open warning light and unusual noises from the hood.

Diagnosis: Diagnostic testing with the GeekOBD APP confirmed B059D. Inspection found damaged wiring in the hood latch circuit.

Solution: The damaged wiring was repaired and insulated to prevent future issues.

Cost: $90 (repair labor and parts included)

Result: The warning light was resolved, and the customer reported no further issues.

Diagnose B059D

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: B059D
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes