2021 Chevy Tahoe, Suburban Owners Experience Issues With Underseat Wiring
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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.
2021 Chevy Tahoe RST pictured here.
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.
2021 Chevy Tahoe RST pictured here.
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.
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We bought our 2021 RST Tahoe less than 3 months ago. In that time, it has leaked water through the sunroof and appears to be coming out of the third row seatbelt. The captains chairs rattle and the dealership ordered a replacement seat for one because they couldn’t fix the rattling. Also, the safety restraint warning appeared this week. Lastly, I hope, the front grill is peeling. I am taking it to the second dealership tomorrow. Extremely disappointed for the price. I want to love this car for a long time, but I don’t have any confidence in it’s longevity.
Just bought a 2021 chevy silverado rst and it’s doing the same within an hours drive in came on 20 times.
I had this issue as well. I leased a brand new 2021 Suburban in December 2020. The battery has died 5 times and the service restraint light has gone off twice. I have been driving a rental for 3 weeks because GM does not know what is wrong with the vehicle battery. After calling GM customer support, I was offered a $100 service coupon for my troubles. I have been patient but enough is enough.
Please tell me they are working to fix this. I have 400 miles on mine and it is aggravating
I have a 2021 Chevy Tahoe the Service Safety Restraint System light came on at 225 miles . It was fixed for a while bu now at 13861 miles the Service Restraint System Light is back on..
Anybody aware of a class action lawsuit yet?
2022 Tahoe doing the same thing. Beyond frustrating as expensive as this POS is!
I am now having this issue with my 2021 Chevy Tahoe. The dash displays “Service safety restraint System”. Took truck to dealer and was told they were not able to identify and fix the problem as there was no code stored. The warning would come in intermittently and now comes on every time I start the truck. Taking the truck in once again, but decided to Google this problem first and I came across this website. This is absolutely not acceptable and I’m actually very surprised there hasn’t been a recall for this. I hope the issue can be fixed or I’ll have to call the 800 # in the service manual. Thank you so much for all the comments, very informative!