GMC Sierra 3500 HD automatic emergency braking malfunction with no error codes on GMC Sierra 3500 HD

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some GMC Sierra 3500 HD owners report experiencing issues with the automatic emergency braking system despite the absence of error codes. These problems may stem from sensor interference caused by obstructions or dirt affecting the sensors. Additionally, some owners find that a software update can resolve malfunctions, prompting them to check for available updates. Mechanical issues may also be at play, leading owners to seek professional inspection to identify any underlying problems. Furthermore, it is advisable for owners to verify if there are any recalls or service bulletins related to the automatic emergency braking system for their specific model, as manufacturers may release updates to address known issues. If the problem persists, many owners recommend visiting a certified GMC service center for a thorough diagnosis and repair, emphasizing the importance of safety when dealing with braking system concerns.

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