Wierd Issue with 2007 denali

[JML07denali]

I noticed the other day slight flicker dim of the headlights. Upon closer inspection it looks like all the lights flicker from headlights. To tail lights and even the interior lights? I thought it might be a loose ground from the battery but I checked and all is tight. Has anyone had this problem before? Could it be the battery or alternator? Need some direction.

Thanks for any light you can shed on this.

 

[08grey]

Negative wire is know to break down over time and corrode. You can run a negative right to the chassis and to the motor and to the negative of the battery pretty simply. Or look up big 3 upgrade. You will notice the ground is pretty shabby and only runs to the motor.

 

[osidesurfer365]

I had similar issues, new battery but lights would flicker and it wouldn't start sometimes. I had the negative battery cable replaced with a newer one and better grade. All problems went away. There is a thread about this on here I will try to find for ya.

 

[Goodinblack]

http://www.tahoeyukonforum.com/forum/showthread.php?t=63936

 

[JML07denali]

Thanks guys!

 

[GM Customer Service]

I understand that you have noticed an issue with your head lights, JML07denali. I'm glad to see forum members are beginning to step in with feedback. I might not be able to provide you any technical advice but if you have any lingering concerns, please contact by private message.

Jennifer T.
GM Customer Care

 

[JML07denali]

Installed a new battery and all is well now!