The fuel pump may be missing a pressure regulator, allowing for over-pressurization of the fuel system.
Over-pressurization can crack the fuel pump and cause leaks, increasing the risk of a fire in the presence of an ignition source.
What to do
GM will notify owners, and dealers will replace the fuel pump free of charge.
The recall is expected to begin January 6, 2020.
Owners may contact Cadillac customer service at (800) 333-4223, Chevrolet customer service at (800) 222-1020, or GMC customer service at (888-\O988-7267. GM's number for this recall is N192283991.