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<blockquote data-quote="HvNd4Speed" data-source="post: 6850070" data-attributes="member: 573564">i wish i would have put money on the answer to that....i had a 98 blazer...same issue.....i never got to the bottom of my problem and ended up selling the truck anyway...i was running a ppi a600.2 to 3 10w6&#039;s and my output from subs would fluctuate...at low rpm&#039;s...it was like the amp wasnt making enough power...on highway...it would come and go....at some points...the bass would be really full sounding and then drop off and sound flat....i was only running about 1K watts total...i had a capacitor....only thing i did notice was when my battery failed and i replaced it.....the flickering of light stopped for about a week and then came back....i was gonna say try doing the big 3 but looks like you already have....I even replaced the stock alternator from a newer model salvaged gmc jimmy i had and it did the same thing...BUT...that alternator in the jimmy when i got it running....no light flicker....definitely a weird issue and is common to the blazer line....good luck with it!</blockquote>

[QUOTE="HvNd4Speed, post: 6850070, member: 573564"] i wish i would have put money on the answer to that....i had a 98 blazer...same issue.....i never got to the bottom of my problem and ended up selling the truck anyway... i was running a ppi a600.2 to 3 10w6's and my output from subs would fluctuate...at low rpm's...it was like the amp wasnt making enough power...on highway...it would come and go....at some points...the bass would be really full sounding and then drop off and sound flat....i was only running about 1K watts total...i had a capacitor.... only thing i did notice was when my battery failed and i replaced it.....the flickering of light stopped for about a week and then came back....i was gonna say try doing the big 3 but looks like you already have....I even replaced the stock alternator from a newer model salvaged gmc jimmy i had and it did the same thing...BUT...that alternator in the jimmy when i got it running....no light flicker....definitely a weird issue and is common to the blazer line....good luck with it! [/QUOTE]

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