Chevrolet Trailblazer EXT shaking and heavy to drive with power loss and rattling noise on Chevrolet Trailblazer EXT

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

Problem overview

Some Chevrolet Trailblazer EXT owners report experiencing shaking and heaviness while driving, which may be attributed to a defective wheel bearing or improper wheel alignment. These issues can cause vibrations, especially at high speeds, and may indicate serious problems if the shaking occurs during acceleration. Additionally, some owners report experiencing power loss, potentially due to obstructed fuel injectors or other mechanical concerns affecting engine performance. Rattling noises from the engine have also been noted, which could stem from exhaust issues, loose accessories, or timing chain problems. Furthermore, rattling sounds from the rear may relate to sway bar links or loose components, and some owners have reported whining noises during acceleration that fluctuate with RPMs. Given the variety of potential causes for these symptoms, it is advisable for owners to seek a professional inspection to accurately diagnose and resolve the issues impacting their Chevrolet Trailblazer EXT's performance and drivability.

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