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<blockquote data-quote="AlterEgo99" data-source="post: 5986056" data-attributes="member: 610253">Well, it&#039;s not like I have an overwhelming car audio system in my &#039;08 Silverado, so I am sure that my stock OEM 165AMP alternator cannot be that stressed.&nbsp; I was just curious if this is standard behavior or not.&nbsp; I thought I read somewhere that alternators supply voltage a bit differently cold vs. hot, but I didn&#039;t think they would swing by almost 2 volts.&nbsp; There are certainly no issues (no warning lights, diagnostic codes, etc.) in my truck, I just noticed it today and decided to check it with a DMM when I got home.I arrived, placed a DMM on the battery and it was around 13 volts, just like the analog voltage meter on the dash was reporting.&nbsp; I shut the truck off for about a minute, re-started and it went back up to 14.5+ volts, then over the course of a couple of minutes it settled back down to about 13 volts.&nbsp; Vewy, vewy curious.&nbsp; //content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif</blockquote>

[QUOTE="AlterEgo99, post: 5986056, member: 610253"] Well, it's not like I have an overwhelming car audio system in my '08 Silverado, so I am sure that my stock OEM 165AMP alternator cannot be that stressed. I was just curious if this is standard behavior or not. I thought I read somewhere that alternators supply voltage a bit differently cold vs. hot, but I didn't think they would swing by almost 2 volts. There are certainly no issues (no warning lights, diagnostic codes, etc.) in my truck, I just noticed it today and decided to check it with a DMM when I got home. I arrived, placed a DMM on the battery and it was around 13 volts, just like the analog voltage meter on the dash was reporting. I shut the truck off for about a minute, re-started and it went back up to 14.5+ volts, then over the course of a couple of minutes it settled back down to about 13 volts. Vewy, vewy curious. [IMG]//content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif[/IMG] [/QUOTE]

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