General Motors debuted the all-new 2021 Chevy Tahoe and 2021 Chevy Suburban side-by-side in a special event in downtown Detroit last December, ushering in fresh designs for the exterior and interior, the latest tech features, a new diesel engine option, and fresh underpinnings. Now, however, it looks like some owners are experiencing issues with the new SUVs’ underseat wiring.
According to one owner, a warning message would appear intermittently on the Driver Information Center in the gauge cluster of her 2021 Chevy Tahoe High Country, which would read “Service Safety Restraint System.” After bringing the vehicle in to her local dealer, the owner was informed that the cable connecting to the airbag control module under the driver’s seat was made too short at the factory, and that any seat adjustments would cause the wire to come loose. The dealer informed the owner that as soon a replacement cable was available and installed, the issue should be resolved.
General Motors has likely issued a Technical Service Bulletin (TSB) to address the issue.
As a reminder, the 2021 Chevy Tahoe and 2021 Chevy Suburban introduce brand-new generations for both nameplates, with the Tahoe entering its fifth generation, and the Suburban entering its twelfth generation. Both full-size SUVs are based on the GM T1 platform, the same bones as the fourth-generation Chevrolet Silverado and fifth-generation 2021 Cadillac Escalade. Both models also come with completely redesigned interior treatments.
Under the hood, the 2021 Chevy Tahoe and 2021 Chevy Suburban offer three engine options, including the naturally aspirated 5.3L V8 L84, the naturally aspirated 6.2L V8 L87, and the new-for-2021 3.0L I6 LM2 turbodiesel Duramax. All three engines pair with GM’s Hydra-Matic 10L80 10-speed automatic transmission.
Both the 2021 Chevy Tahoe and the 2021 Chevy Suburban are produced at the GM Arlington plant in Arlington, Texas.
Are you a 2021 Chevy Tahoe or 2021 Chevy Suburban owner who has also experienced an issue with your vehicle’s underseat wiring? Let us know about it in the comments, and make sure to subscribe to GM Authority for more Chevrolet Tahoe news, Chevrolet Suburban news, Chevrolet news, and around-the-clock GM news coverage.