Section 197 (Fuses & Circuit Breakers): Identification: Notes
WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2004 GMC Savana Special, 2004 GMC Savana Camper Special, 2004 GMC Savana, 2004 Chevrolet RV Cutaway, and 2004 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See appropriate COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.