Engine shuts off

Good afternoon,

Are there any codes set in the system?

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

I would start by cleaning the throttle body. A dirty throttle body will cause this issue.

https://www.2carpros.com/articles/throttle-actuator-service

https://www.2carpros.com/articles/stall-at-idle

If cleaning does not solve the issue, the throttle body may have to be replaced.

Roy

THROTTLE BODY CLEANING PROCEDURE

CAUTION: Turn OFF the ignition before inserting fingers into the throttle bore. Unexpected movement of the throttle blade could cause personal injury.

NOTE:
Do not insert any tools into the throttle body bore in order to avoid damage to the throttle valve plate.
Do not use any solvent that contains Methyl Ethyl Ketone (MEK). This solvent may damage fuel system components.

1. Remove the air cleaner outlet duct.
2. Inspect the throttle body bore and the throttle valve plate for deposits. You must open the throttle valve in order to inspect all of the surfaces.

IMPORTANT: DO NOT prop open the throttle blade with the ignition key in the ON position as it may set a diagnostic trouble code (DTC).

3. Clean the throttle body bore and the throttle valve plate using a clean shop towel with GM Top Engine Cleaner P/N 1052626 (Canadian P/N 993026) or AC-Delco Carburetor Tune-up Conditioner P/N X66-P, or an equivalent product.
4. Install the air cleaner outlet duct.