AutoCodes – Chevrolet – B1527 2015 Chevrolet Silverado

B1527 2015 Chevrolet Silverado Code - Parasitic Load

Quick Answer

The components most likely to cause a parasitic draw on the battery of the vehicle are switches, relays, and control modules. Common causes include Faulty Battery, Low Battery Charge, Charging System. 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: B1527 2015 Chevrolet Silverado indicates Parasitic Load.
Common causes: Common causes include Faulty Battery, Low Battery Charge, Charging System.
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 195

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 Apr 21, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1527 2015 Chevrolet Silverado Description

The components most likely to cause a parasitic draw on the battery of the vehicle are switches, relays, and control modules. After the ignition is turned OFF the control modules will begin to go to sleep (shut OFF). All control modules do not go to sleep at the same time, some, like the Heating, Ventilation, and Air-Conditioning (HVAC) and body control modules, may take up to 30 min or longer after turning the ignition off before going to sleep. Others such as the ON Star and keyless entry control modules may periodically wake up then go back to sleep. These are all normal conditions. The Body Control Module (BCM) monitors the state of charge of the electrical system. If the BCM senses that the state of charge at ignition On is 30% lower than what it was when the engine was running.

OBDII Code B1527 2015 Chevrolet Silverado - Parasitic Load - AutoCodes.com — B1527 2015 Chevrolet Silverado Code - Parasitic Load

What does this mean?

What are the Possible Causes of the DTC B1527 2015 Chevrolet Silverado?

Faulty Battery
Low Battery Charge
Charging System

How to Fix the DTC B1527 2015 Chevrolet Silverado?

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 B1527 2015 Chevrolet Silverado 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 B1527 2015 Chevrolet Silverado code?

Need more information on how to fix the B1527 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 B1527 2015 Chevrolet Silverado Code

1. What does the OBDII code B1527 mean on a 2015 Chevrolet Silverado?

The B1527 code refers to a Parasitic Load issue, indicating excessive electrical draw while the vehicle is off, potentially draining the battery.

2. What are the common symptoms of code B1527 in a 2015 Chevrolet Silverado?

Symptoms include a dead or weak battery, difficulty starting the vehicle, and potential warning lights or error messages on the dash.

3. What causes the B1527 Parasitic Load code?

Common causes are faulty electrical components, such as a malfunctioning module, wiring issues, or accessories staying powered when the vehicle is off.

4. How do I diagnose code B1527 on my 2015 Silverado?

A mechanic will typically use a multimeter to check for abnormal current draw and isolate the circuit or component causing the issue.

5. Can a faulty battery cause the B1527 code?

A faulty battery itself may not cause the code, but it can contribute to symptoms like low voltage, which complicates diagnosing the parasitic load.

6. Is code B1527 specific to one component in the Silverado?

No, it can be linked to various components, including faulty control modules, wiring harness issues, or aftermarket accessories.

7. Can I clear the B1527 code without fixing the issue?

Clearing the code without addressing the underlying problem will not resolve the excessive parasitic load, and the code is likely to return.

8. How can I prevent a parasitic load from causing code B1527 in the future?

Ensure all electrical components are functioning correctly, avoid leaving accessories plugged in, and regularly inspect the vehicle's electrical system.

9. How much does it typically cost to repair code B1527 on a 2015 Chevrolet Silverado?

Repair costs vary depending on the root cause but can range from $100 to $500, primarily if component replacement or extensive diagnostics are needed.

10. Can I still drive my Silverado with code B1527 active?

You can drive it, but the parasitic load may drain the battery, leading to starting issues or potential electrical malfunctions if not addressed promptly.