2003 GMC Yukon altenater charging

2003 GMC YUKON
98,000 MILES • V8 • 4WD • AUTOMATIC
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WILLIEPRICE1
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i replaced my battery about 2 months ago while the engine was running. i just was told yesterday you shouldn't do that,(the called it deadheading the altenater) which now i know why, my volt meter was always peged way past 19 volts, so after 2-2-1/2 months i thought i probably fried my altenater so i just repaced my altenater and the gage still goes past 19 volts. another gay says that i probably have something else going on, maybe in the computer?
Feb 22, 2008 at 4:15 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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