Headlights dimming while turning?

[Omallyyy]

It was about -8 Celsius. Everytime I turned my steering wheel the headlights would dim? Is this a common thing or is there something else at play here? Did it with high beams too.

 

2015 GMC Sierra all terrain

 

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[Bash74]

It was about -8 Celsius. Everytime I turned my steering wheel the headlights would dim? Is this a common thing or is there something else at play here? Did it with high beams too.
 
2015 GMC Sierra all terrain
 
Sent from my SM-G930W8 using Tapatalk
 
 

Does it do it while driving or just when sitting still?

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[Omallyyy]

Does it do it while driving or just when sitting still?

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Definitely when I'm sitting still. Unsure about driving I thought it did while driving too but I'm not 100% I'll check that again tomorrow.

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[Bash74]

Definitely when I'm sitting still. Unsure about driving I thought it did while driving too but I'm not 100% I'll check that again tomorrow.

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It could just be that since the truck isn't moving turning the wheels takes a little more work because of weight and grip that it puts a little strain on the electric power steering so it pulls more power from whole system

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[Boardmember]

Could it be your truck’s way of nudging you to move somewhere it wasn’t -8*C?   Like Miami maybe?

 

holy cow. 

 

Sorry.   That wasn’t really helpful.   Hope someone here can give you a diagnosis.  

[Manny Perez]

8 hours ago, Omallyyy said:

 

It was about -8 Celsius. Everytime I turned my steering wheel the headlights would dim? Is this a common thing or is there something else at play here? Did it with high beams too.

 

2015 GMC Sierra all terrain

 

Sent from my SM-G930W8 using Tapatalk

 

 

 

I'm no tech but if you have electric power steering maybe it has something to do with it, i would call GM customer relations and let the company check that out.

Maybe there is a loose ground or short somewhere.

[Dnt]

I would probably have the battery checked as a first step, most auto parts will test it for free. According to most reports the average battery life is 4 to 6 years so it would not be uncommon to see earlier than 4 year failures on a percentage of batteries. There have been reports (on this forum) about bad power distribution connections and cables but I would try to eliminate the easy and more common issues first. A nice AGM battery and you might be all set for 8 to 10 years?