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Home >> GMC >> 1998 >> Forward Control 7.4 B >> Repair and Diagnosis >> Electrical >> Charging Systems >> On-Vehicle Testing (Charging System) >> Notes

On-Vehicle Testing (Charging System): Notes

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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 COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION section before disconnecting battery.
NOTE: Before making electrical checks, visually inspect all terminals for clean, tight connections. Ensure all charging system related fuses are okay. Check generator mounting bolts and drive belt tension. Ensure battery is in good condition prior to testing charging system.