Here's another remedy for Buicks from model years 2000 through 2019 if the normal diagnosis doesn't work when the SES light is on.

This bulletin applies to 2012-2019 Buick Enclave vehicles equipped with a 3.6L engine.

This bulletin applies to 2012 Buick LaCrosse, Regal and Verano vehicles.

This bulletin applies to some 2013-2017 Buick Enclave vehicles.

This bulletin is for some 2013-2018 Buick Encore vehicles equipped with all-wheel drive (AWD).

Some owners of 2010-2017 Buick Enclave vehicles might comment about a clunk/thump noise on acceleration once after each key cycle that might be mistaken as coming from the suspension or engine compartment.

On some 2016 Buick Cascada and 2012-2017 Verano vehicles, the accelerator pedal can break at the stalk just below the housing due to the driver entering/exiting the vehicle with their foot resting on the pedal.

On certain 2016 Buick Envision vehicles, the front-wheel speed sensor wires may be overstressed and can break. 

This bulletin applies to 2011-2017 Buick Regal, 2010-2018 LaCrosse and 2013-2017 Verano vehicles equipped with 2.0 liter, 2.2L or 2.4L engines. 

Some owners of 2014-2015 Buick Verano vehicles may complain that the HVAC intermittently only blows cold air at operating temperatures, even when the controls are set in the warmest position.