Answers
Oct 11, 2023 - 10:42 PM
Hello there.
While it's possible that a malfunctioning body control module (BCM) could affect various vehicle functions, including lighting, it's not typically the first component to suspect when your brake lights are not working. Brake lights are more commonly associated with issues related to the brake light switch, bulbs, wiring, fuses, and sometimes the turn signal switch or related wiring.
Before considering the BCM as the culprit, it's a good idea to thoroughly check and address the more common and simpler potential causes, as previously mentioned. If all of those check out and you're still experiencing issues with the brake lights, then it might be worth having a professional mechanic or technician inspect the BCM and its associated circuits to see if it's contributing to the problem.
In many cases, problems with the BCM affecting the brake lights are relatively rare, and it's more likely to be one of the simpler components or connections causing the issue.
We hope this helps. Have a nice day!
While it's possible that a malfunctioning body control module (BCM) could affect various vehicle functions, including lighting, it's not typically the first component to suspect when your brake lights are not working. Brake lights are more commonly associated with issues related to the brake light switch, bulbs, wiring, fuses, and sometimes the turn signal switch or related wiring.
Before considering the BCM as the culprit, it's a good idea to thoroughly check and address the more common and simpler potential causes, as previously mentioned. If all of those check out and you're still experiencing issues with the brake lights, then it might be worth having a professional mechanic or technician inspect the BCM and its associated circuits to see if it's contributing to the problem.
In many cases, problems with the BCM affecting the brake lights are relatively rare, and it's more likely to be one of the simpler components or connections causing the issue.
We hope this helps. Have a nice day!
Oct 17, 2023 - 12:52 PM
Yes, on many Chevrolet (and other GM vehicles), the Body Control Module (BCM) can play a role in the operation of the brake lights. The BCM controls and monitors many of the vehicle's body-related functions, including certain lights.
However, if the brake lights aren't working, there are several common causes to consider before jumping to the BCM:
Brake Light Bulbs: Always start by checking the bulbs. They could be burnt out, especially if they've been in use for a long time.
Brake Light Switch: This is a switch usually located near the top of the brake pedal. When you press the pedal, it activates the switch and turns on the brake lights. This is a common point of failure for brake light issues.
Fuse: Check the fuse box for any blown fuses associated with the brake lights or BCM.
Wiring and Connectors: Damaged or corroded wiring, or loose connectors, can interrupt the brake light circuit.
Relay: Some vehicles use a relay for the brake lights. If this relay fails, it can prevent the brake lights from operating.
Body Control Module (BCM): If other common causes are ruled out and especially if there are other unrelated electrical issues with the vehicle, the BCM could be a suspect. A failing BCM can cause a variety of electrical anomalies, including issues with the brake lights. Diagnostic scanning can sometimes reveal BCM-related trouble codes.
Ground Connections: Poor ground connections can lead to issues with various electrical components, including the brake lights.
If you're troubleshooting brake light issues on a Chevrolet, it's recommended to start with the simpler and more common causes (bulbs, brake light switch, fuses) before moving on to more complex components like the BCM. Always use caution when working on electrical systems, and if in doubt, consult with a mechanic or automotive electrician.
However, if the brake lights aren't working, there are several common causes to consider before jumping to the BCM:
Brake Light Bulbs: Always start by checking the bulbs. They could be burnt out, especially if they've been in use for a long time.
Brake Light Switch: This is a switch usually located near the top of the brake pedal. When you press the pedal, it activates the switch and turns on the brake lights. This is a common point of failure for brake light issues.
Fuse: Check the fuse box for any blown fuses associated with the brake lights or BCM.
Wiring and Connectors: Damaged or corroded wiring, or loose connectors, can interrupt the brake light circuit.
Relay: Some vehicles use a relay for the brake lights. If this relay fails, it can prevent the brake lights from operating.
Body Control Module (BCM): If other common causes are ruled out and especially if there are other unrelated electrical issues with the vehicle, the BCM could be a suspect. A failing BCM can cause a variety of electrical anomalies, including issues with the brake lights. Diagnostic scanning can sometimes reveal BCM-related trouble codes.
Ground Connections: Poor ground connections can lead to issues with various electrical components, including the brake lights.
If you're troubleshooting brake light issues on a Chevrolet, it's recommended to start with the simpler and more common causes (bulbs, brake light switch, fuses) before moving on to more complex components like the BCM. Always use caution when working on electrical systems, and if in doubt, consult with a mechanic or automotive electrician.
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