The Chevy Tahoe and Chevy Suburban both received a generational overhaul for the 2021 model year, with the Chevy Tahoe entering its fifth generation, and the Chevy Suburban entering its twelfth generation. Notably, some 2021 through 2023 Chevy Tahoe and Chevy Suburban owners may notice a pop or clunk sound emanating from underneath their vehicle when turning. Now, a possible cause for this issue has been identified, as has a fix.
According to a recent report from GM TechLink, this issue may affect any fifth-generation Chevy Tahoe or twelfth-generation Chevy Suburban SUV. The issue can manifest as a pop, clunk, rattle, or clicking sound underneath the vehicle when turning. The condition can usually be duplicated by making a full left turn followed by a full right turn at slow speeds in an open parking lot.
Critically, although this sound may appear to be coming from the front of the vehicle, the problem may in fact be a loose rear sway bar link upper mounting. To address this issue, GM technicians are instructed to inspect the rear sway bar link upper mounting bolt and nut. The bolt and nut may not be properly torqued. If the bolt and nut are loose, the technician will torque it to 74 pound-feet, which should fix the issue.
Notably, the recent generational overhaul for both SUVs introduced a new independent multilink rear suspension setup.
As a reminder, the fifth-generation Chevy Tahoe and twelfth-generation Chevy Suburban offer three engine options total, including the naturally aspirated 5.3L V8 L84 gasoline engine, rated at 355 horsepower and 383 pound-feet of torque, the naturally aspirated 6.2L V8 L87 gasoline engine, rated at 420 horsepower and 460 pound-feet of torque, and the 3.0L I6 LM2 turbodiesel Duramax engine, rated at 277 horsepower and 460 pound-feet of torque.