07 Tahoe with flickering headlights
February 14th, 2016, 10:26 AM
#21
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It's been a while since I've posted....
My 07 Tahoe (out of warranty) has come down with a case of flickering headlights and fog lights. The voltage gague is at 14 and the problem is happening mostly when coasting but sometimes when my foot is on the gas.
I have a feeling that the problem is the alternator, but I also saw some TSBs that resemble the issue, but didn't quite nail it on the head.
Anyone have this problem?? Anyone know what the cheap but proper fix is???
My 07 Tahoe (out of warranty) has come down with a case of flickering headlights and fog lights. The voltage gague is at 14 and the problem is happening mostly when coasting but sometimes when my foot is on the gas.
I have a feeling that the problem is the alternator, but I also saw some TSBs that resemble the issue, but didn't quite nail it on the head.
Anyone have this problem?? Anyone know what the cheap but proper fix is???
September 11th, 2016, 6:33 PM
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September 11th, 2016, 6:35 PM
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Help. Me too
So... the problem is back with a vengance!!! It's horrible. I need to find a way to get the dealer to work on this cheaper than book rate. Not happy.
Anyone else have this issue and fixed it?? Pictures of where the fix was maybe??
When the lights are flickering, the engine runs rough.
Anyone else have this issue and fixed it?? Pictures of where the fix was maybe??
When the lights are flickering, the engine runs rough.
September 11th, 2016, 8:13 PM
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September 11th, 2016, 8:20 PM
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Thanks for the info.
i bought a new battery and had the alternator checked. Did you have your alternator checked too? Or did you just get a new one hoping for the best ? I willing to try anything.
Thsnks again. E
September 11th, 2016, 10:55 PM
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October 29th, 2016, 2:03 AM
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PS: Thank you to everyone who posts on these forums, as they have been extremely helpful on many occasions, and I've never felt like I could contribute any additional information, until this issue arose.
January 13th, 2020, 2:26 PM
#28
Replace headlights
Sears, as expected, said the battery was fine... They tested the alternator and it too came back OK....
The problem appears to be getting worse -- all of the lighting is noticably flickering now.
I spent some time under the hood checking coil packs and wires -- all looked OK.
Popped open the power center and found the relay for the LOW FAN was up a bit -- re-seated it and testing the lights. no flicker. Could I have possibly fixed the problem???
After 20 minutes of testing, the flickering was gone.
I covered the power center up and did a final test.
It's flickering again.
My next step is to disconnect the battery and pop the power center open to check the grounds in there.
I also put a call into my dealership's service manager to see if he has any thoughts, TSBs, or known fixes.
It figures that the month after I pay the truck off, problems start happening.
The problem appears to be getting worse -- all of the lighting is noticably flickering now.
I spent some time under the hood checking coil packs and wires -- all looked OK.
Popped open the power center and found the relay for the LOW FAN was up a bit -- re-seated it and testing the lights. no flicker. Could I have possibly fixed the problem???
After 20 minutes of testing, the flickering was gone.
I covered the power center up and did a final test.
It's flickering again.
My next step is to disconnect the battery and pop the power center open to check the grounds in there.
I also put a call into my dealership's service manager to see if he has any thoughts, TSBs, or known fixes.
It figures that the month after I pay the truck off, problems start happening.
Im not sure if you got your issue solved or not. I have a 2005 Suburban & the headlights were flickering on it. After taking to a mechanic, he suggested changing the headlight bulbs, due to the fact that when they ate getting ready to go out, they have the tendency to flicker. I replaced the bulbs & haven't noticed then flickering anymore. Hope this helps.....
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