EGR System (2.5L): Notes
WARNING: This page is about a different car, the 2003 Chevrolet Tracker. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
A malfunction in EGR system can set a DTC. For additional testing procedures and specifications, see DIAGNOSTIC TROUBLE CODE DEFINITIONS
in SELF-DIAGNOSTICS - 2.5L TRACKER article.