Question about 1998 GMC Yukon
It arcs because there is current draw from the jumper cables to your vehicle. The system also will be drained if the charging system is not working. Turn the truck on and raise and hold the rpm to about 2000-2200. Turn on all electronics that you can find(blower motor on high, headlights, rear defrost, wipers, 4 way flashers, etc.). Measure the voltage at the battery with a voltmeter; it should be 13.5-15.5 volts dc. If it does not measure in that range the alternator is most likely bad. A worn alternator belt can also cause it not to charge from slipping/being loose.
Posted on Jan 02, 2015
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Posted on Jan 02, 2017
SOURCE: needs a jump every day
It sounds like the battery has a dead cell in it. Replace the battery. If you have an alarm installed remove the in line fuse from the alarm and see if that stops the battery drain.
Posted on Oct 11, 2009
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