Owner Experiences Strange Noise from Recently Bought 2026 GMC Sierra AT4 EV, Propped up at the Dealership for Repairs; Dealer Assures Prompt and Accurate Rectification of Issue
In the burgeoning electric vehicle (EV) market, the 2026 GMC Sierra AT4 EV has shown promise as a robust and innovative electric pickup truck. However, like any new model, it has not been without its challenges. This article explores some of the common issues faced by Sierra AT4 EV owners, particularly with strange rattles over speed bumps and charging inconsistencies.
One of the most perplexing issues for Sierra AT4 EV owners is the occurrence of strange rattles over speed bumps. These noises, often described as something rolling around in the truck bed, have been traced back to early-production quirks such as loose trim components, misaligned bed parts, or suspension-related noises.
Dealers and manufacturers are working diligently to address these issues, often through calibration updates, trim adjustments, or securing loose parts. Owners experiencing these noises are encouraged to have their dealers inspect their trucks and hold them until they are satisfied with the fix.
Common solutions include checking for loose or misaligned parts in the bed, tailgate, and undercarriage. Inspecting and tightening suspension and mounting components is also essential. Dealer calibration updates and software patches may also fix some noise issues. Ensuring bed liners or cargo accessories are properly installed and secured is another crucial step.
Regarding charging issues, Jack Wang, another Sierra EV owner, has reported real-world problems, including inconsistent range estimates and charging speed limitations. These issues can be frustrating, but solutions exist. Choosing the right amperage for overnight charging, taking advantage of off-peak utility rates, and investing in a Level 2 charger can significantly improve the ownership experience.
Preconditioning the battery before departure, using heated seats instead of cabin heat, and planning charging stops in sheltered or heated locations can help manage EV range in cold weather. A dedicated home charging setup can eliminate much of the frustration associated with public charging.
Roxanne Brooks, a new Sierra AT4 EV owner, recently joined the GMC Sierra EV Owners group on Facebook. She purchased a 2026 AT4 EV in Metallic Ocean, but it's still at the dealer for a 3M and ceramic coat, and a minor fix. The dealer has provided her with a brand-new Denali loaner while they work on the issue.
The role of dealers in the EV era is crucial, with new variables like suspension tuning for heavy battery packs and unfamiliar electrical systems. Armen Hareyan, the founder and Editor-in-Chief of Torque News, with expertise in the automotive industry and a special interest in Tesla and electric vehicles, emphasises the importance of dealers in resolving these early-model quirks.
For new Sierra EV buyers, a thorough test drive, detailed documentation of any unusual issues, and allowing dealers to fix issues before delivery can lead to a smoother, quieter, and more reliable ride. Patience is often needed as manufacturers iron out early-model quirks.
[1] Sources: GMC Sierra EV Owners group on Facebook, Torque News
In conclusion, the 2026 GMC Sierra AT4 EV is a promising electric pickup truck, but like any new model, it has faced challenges. Strange rattles over speed bumps and charging issues are common, but dealers and manufacturers are working diligently to address these issues. New EV buyers are encouraged to be patient, conduct thorough test drives, and allow dealers to fix issues before delivery for a smoother, quieter, and more reliable ride.
- Despite the innovative nature of the 2026 GMC Sierra AT4 EV, electric-vehicle owners have reported issues such as strange rattles over speed bumps and charging inconsistencies, which dealers and manufacturers are actively working to remedy.
- To improve the ownership experience of the 2026 GMC Sierra AT4 EV, owners can take various steps, including ensuring proper installation of bed liners or cargo accessories, selecting the right amperage for overnight charging, and employing preconditioning techniques for the battery before departures.
- In the burgeoning electric-vehicle industry, dealers play a crucial role in resolving early-model quirks, as demonstrated by the ongoing efforts to address issues with the Sierra AT4 EV, such as suspension tuning for heavy battery packs and unfamiliar electrical systems.
