2006 Chevy Colorado

I assume you have a p0506 code or p0106 code?If so clean the throttle body. On rare occasions, a SES light may be experienced due to DTCs P0105, P0106, and/or P0506. There may or may not be an idle complaint accompanying the SES light. This may be due to excessive carbon build up in the throttle body. Clean the throttle body bore and plate for evaluation. Post back with any other questions.