10-01-2021, 05:27 AM | #1 |
Drives: 2004 Silverado, 2020 ZL1 Join Date: Oct 2016
Location: WA
Posts: 83
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2020 tail light housing cracks
I'm not sure if this is the right spot to post, but I've had what look like stress cracks, randomly appear on both sides. Has anyone had this? I've never seen or heard of it. I know it's still under warranty but I'm worried about the dealer scratching stuff in the replacement process.
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10-06-2021, 12:22 AM | #2 |
Thank you Al Oppenheiser!
Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017
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I've seen cracks like that before in polycarbonate. In that case the plastic was under high static tensile stress (induced by thermal stresses from 3000 watts of ultrasonic welding) and later exposed to chemicals (alkaline) that attacked the plastic which then developed a very similar pattern of sawtooth cracks along the stressed interface.
If you're using anything other than soap and water to clean the car, or anything solvent based on those lights ... then stop. Or it will repeat with the replacements. |
10-06-2021, 10:23 PM | #3 | |
Drives: 2004 Silverado, 2020 ZL1 Join Date: Oct 2016
Location: WA
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10-06-2021, 11:14 PM | #4 | |
2020 Shadow Gray 2SS
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10-07-2021, 06:48 AM | #5 |
Drives: 2004 Silverado, 2020 ZL1 Join Date: Oct 2016
Location: WA
Posts: 83
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Yes it is on both sides but seems worse on the passenger side. That's a good possibility although I thought that kind of stuff was done with calibrated, preset tools? It could also be maybe a bad set/molding? I'll have to make an appointment for that and the moisture trapped inside the lens of my, currently third backup camera
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10-08-2021, 01:34 PM | #6 |
Petro-sexual
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I have less noticeable ones around the edges of the lenses where they attach to the lamp body.
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10-08-2021, 06:13 PM | #7 | |
Thank you Al Oppenheiser!
Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017
Location: Sarasota, FL
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Tail lights can be replaced easily (and DIY) by opening the trunk and removing the plastic cover plates on the sides at the top of the bumper. Bumper cover can stay on IIRC. |
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10-08-2021, 08:00 PM | #8 | |
Drives: 2004 Silverado, 2020 ZL1 Join Date: Oct 2016
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