Pontiac G5 knocking sound from the right side near the glove box after ignition on Pontiac G5

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

Problem overview

Some Pontiac G5 owners report experiencing a knocking sound from the right side near the glove box after ignition, which may indicate several potential issues. These include a defective recirculate motor, which can create a loud ticking noise under the passenger side, and a defective blend door actuator, potentially caused by a burning electric motor, leading to clicking or knocking noises. Additionally, some owners find that a faulty blower motor can contribute to similar sounds in that area. Furthermore, engine knocking, often linked to poor fuel quality or malfunctioning components, may also be a concern. Lastly, worn or faulty spark plugs can result in a noticeable spark knock, necessitating replacement. To resolve these issues, it is advisable for owners to have a professional mechanic inspect their vehicle to accurately diagnose the problem and recommend appropriate solutions.

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