Left Mirror Inoperative In Any Position
WARNING: This page is about a different car, the 1998 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
Check for open in Yellow wire between power mirror switch connector terminal "H" and splice S502 (located in left front door harness). Repair as necessary. If circuit is okay, replace power mirror switch. See POWER MIRROR SWITCH under REMOVAL & INSTALLATION.