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Engine-Codes – GMC – B1982 GMC

B1982 GMC Code - Battery Voltage High

Quick Answer

The B1982 GMC diagnostic trouble code indicates that the battery voltage in the vehicle is reading higher than the specified threshold. Common causes include Malfunctioning voltage regulator, Faulty alternator, Overcharging battery. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
B1982 GMC indicates Battery Voltage High.
Common causes
Common causes include Malfunctioning voltage regulator, Faulty alternator, Overcharging battery.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code B1982 GMC Description

The B1982 GMC diagnostic trouble code indicates that the battery voltage in the vehicle is reading higher than the specified threshold. This can be a concerning issue as it can lead to various electrical system malfunctions and potentially damage sensitive components in the vehicle. The battery voltage is crucial for the proper functioning of the vehicle's electrical systems, including the starter, alternator, and various sensors. When the battery voltage is too high, it can cause these systems to malfunction or fail, leading to poor vehicle performance and potential safety hazards.

OBDII Code B1982 GMC - Battery Voltage High
B1982 GMC Code - Battery Voltage High

Common Causes of B1982 GMC

  1. Malfunctioning voltage regulator.
  2. Faulty alternator.
  3. Overcharging battery.
  4. Loose or corroded battery terminals.
  5. Wiring issues in the electrical system.

Symptoms of B1982 GMC

  1. Dimming or flickering lights on the dashboard or exterior of the vehicle.
  2. Erratic behavior of electrical components such as power windows or door locks.
  3. Difficulty starting the vehicle or frequent jump starts needed.
  4. Unusual sounds coming from the engine or electrical system.
  5. Check engine light illuminated on the dashboard.

How to Fix B1982 GMC

  1. Begin by checking the battery voltage using a multimeter to confirm the high voltage reading.
  2. Inspect the alternator and voltage regulator for any signs of damage or malfunction.
  3. Test the battery to ensure it is holding a charge within the specified range.
  4. Check and clean the battery terminals to ensure a proper connection.
  5. If necessary, replace the alternator, voltage regulator, or battery to resolve the high voltage issue.

Cost to Fix B1982 GMC

The cost of repairing a high battery voltage issue can vary depending on the specific cause of the problem and the parts needed for the repair. On average, the cost of replacing an alternator can range from $300 to $800, while a voltage regulator replacement can cost between $50 and $150. The cost of a new battery can range from $100 to $200. Additionally, labor costs can add to the total repair bill, with hourly rates typically ranging from $80 to $150. It is advisable to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of the vehicle.

What does this mean?

Tech Notes for B1982 GMC

DTC B1982 BATTERY VOLTAGE TOO HIGH BCM

DTC B1982 BATTERY VOLTAGE TOO HIGH RADIO

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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 B1982 GMC Code

1. What are the common symptoms of OBDII code B1982 in a GMC related to high battery voltage?

The common symptoms include illuminated warning lights on the dashboard, issues with electronic components, and potential damage to the vehicle's electrical system.

2. What are the possible causes of OBDII code B1982 GMC indicating high battery voltage?

The possible causes include a malfunctioning alternator, a faulty voltage regulator, a short circuit in the wiring, or a problem with the battery itself.

3. How can I diagnose the OBDII code B1982 GMC related to high battery voltage?

Diagnosing this code usually involves testing the battery voltage, checking the alternator output, inspecting the wiring for any signs of damage, and examining the voltage regulator for proper operation.

4. What are some repair tips for resolving OBDII code B1982 GMC indicating high battery voltage?

Repair tips may include replacing a faulty alternator or voltage regulator, repairing any damaged wiring, ensuring the battery is in good condition, and clearing the trouble code from the vehicle's computer.

5. Is it safe to continue driving a GMC with OBDII code B1982 displaying high battery voltage?

It is not recommended to continue driving the vehicle with this code as it can lead to further electrical problems and potential damage to the vehicle's components. It is best to address the issue promptly.

6. Can resetting the vehicle's computer clear OBDII code B1982 GMC indicating high battery voltage?

Resetting the computer may temporarily clear the code, but if the underlying issue causing the high battery voltage is not addressed, the code is likely to reappear.

7. How much does it typically cost to repair OBDII code B1982 GMC related to high battery voltage?

The cost of repair can vary depending on the specific cause of the high battery voltage. It is recommended to consult a mechanic for a proper diagnosis and cost estimate.

8. Are there any preventive measures to avoid OBDII code B1982 GMC displaying high battery voltage?

Regular maintenance of the vehicle's electrical system, including checking the battery, alternator, and wiring, can help prevent issues leading to high battery voltage and the associated trouble code.

9. Can extreme weather conditions contribute to triggering OBDII code B1982 GMC for high battery voltage?

Extreme weather conditions, such as very high temperatures, can potentially affect the performance of the battery and electrical system, leading to high voltage issues and triggering the trouble code.

10. How urgent is it to address OBDII code B1982 GMC showing high battery voltage?

It is important to address this code promptly to avoid potential damage to the vehicle's electrical components and ensure the safe operation of the vehicle. Delaying repairs can lead to more extensive issues down the line.

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