Miscellaneous Pcm/VCM Controls: Notes

WARNING: This page is about a different car, the 1998 GMC Savana, 1998 Chevrolet Chevy Van, and 1998 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Although not considered true engine performance-related systems, some controlled devices may affect driveability if they malfunction.

NOTE: Manufacturer does not supply many individual component tests. For component tests that are not listed, perform appropriate DTC test. See TROUBLE CODE DEFINITION table. in TESTS W/CODES - 4.3L article.