Generic Electronic Module (Gem): Notes

CAUTION: Disconnect negative battery cable before disconnecting GEM. Failure to do so will result in GEM storing erroneous codes and may also result in erratic operation of GEM after reconnecting. 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 COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.

CAUTION: If replacing GEM, it is necessary to upload module configuration information to New Generation STAR (NGS) tester. After installation, download saved module configuration information to new GEM.