2020 Corvette: GM TechLink: Quarter Panel Rattle Sound

Quarter Panel Rattle Sound

June 29, 2020
GM TechLink

A rattle or creak sound may be heard coming from the quarter panel area while driving at highway speeds on some 2020 Corvette models. The sound may be due to interference of the rocker panel with the lower quarter extension. (Fig. 13)

To eliminate the interference condition, verify which side has the improper contact and adjust the quarter panel extension.

Fig. 13

Loosen the lower bolt that holds the quarter panel and extension (Fig. 14, #1), and then pull outboard on the extension in order to achieve a 1mm clearance from the rocker panel. With the extension in the proper position, retighten the bolt.

Fig. 14

Refer to Bulletin #20-NA-125 for additional information.

– Thanks to Jeff Strausser