lemon-mirror:
Home >> Hummer >> 2003 >> H2 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Remove, Overhaul & Install >> Removal & Installation >> Computerized Engine Controls >> Notes

Computerized Engine Controls: Notes

CAUTION: When battery and some PCM input devices are disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See PROGRAMMING  before disconnecting battery.