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Driving home last night, it was a bit foggy out, so I had the fog lamps turned on. Was about 3/4 home, going through a small town that was not very well light with my dims and fog lamps on and thought I noticed them flicker as I was coasting to a stop sign. Thought I was just tired and seeing things. Get through the next little town and up to speed, coasting down another hill with my high beams on and see them flicker slightly. I think I noticed it once or twice more on both dim w/ fog lamps and with high beams, all whenever I was either coasting or not really on the throttle. If I was on the throttle a decent amount like going up hills, I did not notice it.

It could be a coincidence that it was happening while coasting, but I thought perhaps that the battery/ alternator might not be putting out as much juice when the motor was under load when you are on the throttle.

Has anyone else noticed this? This is on a 2017 GMC Canyon with stock headlights.
 

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I've noticed what appears to be flickering with my fog lights but honestly that whole assembly (for both sides) does not seem very solidly seated so some 'bouncing' may be occurring with them at least.
 

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Anyone here using SL1 low beam LED from Diode Dynamics? I have a 2018 Chevy Colorado. Just ordered them. Wondering about flickering issues.
 

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Have both high and lows - love them and no flickers. I did have to trim down (make it thinner) the plastic retaining ring at the base of the bulbs on one of the sets (don't remember which ones) because they were to thick for the metal light housing retention ring to get around. I did let them know so hopefully that's been fixed.
 
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