flickering lights on my 99
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Safety Car
Joined: May 2004
Posts: 4,811
Likes: 2
From: Simpsonville SC
flickering lights on my 99
I need some help, I have a 99 coupe and I have a flickering lights problem. When Im driving my headlights and my interior lights flicker?? Can someone help me out so I can fix this mild problem. Thank You 
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Joined: Nov 2003
Posts: 72
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From: oklahoma city ok
Sounds like a bad ground. I just read on here over the weekend about grounds being a common issue due to the unseen corrosion in the connectors. May try moving the wires on the chassis ground connectors and see if you can identify it.
Burning Brakes
Joined: Feb 2005
Posts: 1,050
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From: North Cape May NJ
I've got a ton of 12Volt eperience(In another lifetime , managed a Circuit City roadshop , first class MECP cert ) and GM's are notorious for ground problems , I've encountered this on many vehicles and it always seems to be under the dash somewhere .
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Joined: Nov 2003
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From: oklahoma city ok
Originally Posted by happa
thanks man, Ill try that. Would it be a bad battery? if its not the ground
If it is the battery it is likely a bad connection on the battery. Would not expect that the car would start if it was going to have a noticable affect on the lights. If it seems to do it on the bumps instead of smooth ground, then I still suspect bad connections somewhere.
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St. Jude Donor '08-'09
Originally Posted by happa
I need some help, I have a 99 coupe and I have a flickering lights problem. When Im driving my headlights and my interior lights flicker?? Can someone help me out so I can fix this mild problem. Thank You
check the battery first
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Joined: Nov 2004
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every shift
my 2003 would dim at the slighest pull of power even when auto shifted. these cars seem to be voltage hungry, battery fixed it at 7,500 miles. makes me wonder if after market high amp alternator. is not warrented
