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Old 02-20-2014, 05:47 AM   #1
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Join Date: Jan 2014
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Shrinking plastic trim

I have a new CC 36CKTS and with the cold weather it appears like the plastic trim insert along the edge on the outside of the 5r under the overhang has shrunk and popped out at both corners. I have a appt. to get it fixed next week but I'm curious if anyone else has had this issue and what the fix was. I also have the full body paint and this trim has been painted over.

Bob and Dianne Sjulestad
2014 GMC Denali 3500HD DRW 4x4 D/A
2014 Cedar Creek 36CKTS
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Old 02-20-2014, 07:19 AM   #2
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Mine shrank too. Fortunately the Creekside lower body paint does not cover the trim so replacement was as easy by cutting the section out and pushing the new one into place. Shrinkage is very common and I'm sure it'll happen again in time. Get some touch up paint and take care of it yourself once out of warranty. Good luck.

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Old 02-21-2014, 11:50 AM   #3
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Where is the plastic trim located?
2012 Dodge 3500, SLT Big Horn,CC,DRW,Cummins HO, EB, 4x4, 3:73, Retrax Pro, Q20, TST507, Garmin RV760, Sleek 4g
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Old 02-21-2014, 12:47 PM   #4
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This occurs across brands. I had to replace it on my soon to be gone Cougar. I suspect the trim was installed during very warm temperatures & the plastic was stretched tight. Along comes the cold & it shinks, pulling out of the overhang curve. Mine shrank a little the 1st winter & went back into place when it warmed. The 2nd year it didn't stretch back when it warmed. It is an easy fix & not worth taking to the dealer (in my opinion).
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Old 02-23-2014, 11:50 AM   #5
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I had the insert pull out where the cab curves to the cab over cap on our MH it was held by screws at both ends. I removed the bottom screw and have let the moulding just float in the channel it is about inch short on the bottom. Since it is mostly decorative, I just live with it being a bit short

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Old 05-05-2014, 05:24 PM   #6
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Vinyl trim

The reason this happens, is when any kind of PVC (poly vinyl chloride) trim is installed it needs to be cut to length plus minimum 1/4 inch. This way when it is installed it will not shrink. PVC has a memory, so if it is stretched it will shrink, winter or not. That is the installers lack of material science.
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Old 05-05-2014, 06:30 PM   #7
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They all shrink. Some folks screw em, some folks glue em,
most folks ignore em. They hide screw heads. If you want to go fancy, you can stick a strip of SMD's with a clear cover and have some mood lighting under the pin box. You can heat them a bit with a hair dryer and carefully stretch them out but the paint is likely to crack so I doubt you will regain the aesthetics you seek.

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