WAIT TO START (Diesel)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2001 GMC Savana Special, 2001 GMC Savana Camper Special, 2001 GMC Savana, 2001 Chevrolet RV Cutaway, and 2001 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
IPC illuminates WAIT TO START indicator when PCM requests illumination via a hard wired input to IPC. When indicator goes out, engine is ready to be started. During cranking or after starting, indicator may cycle on and off.