2014 sierra cc all terrain

[Rondog]

Headliner stained from water damage after rain

[rav3]

Little more info needed if ur asking for help. 2 common leak issues are Shark Fin or rear high level stop/cargo light .

Where is your stain location?

[Texasdeere]

Fix the leak first obviously.  The headliner isn't too difficult to clean.  The third brake/cargo light was leaking when I bought my truck used.  Headliner was stained all over the back.  A new gasket and everything cleaned up nice.  Can't even tell it was ever there.

Edited February 19, 2025 by Texasdeere

[Rondog]

Driver side front and along back both sides.  Driveway is sloped front to back where truck is parked.

Thanks for your quick reply.  I suspect the shark antennae.  Back stoplight paint has peeled back about 6” so I suspect needs caulked as well.  Been parked same location since new.  Exposed to elements.

I notice you have the max tow package with same engine as mine.  Are you towing trailer?  

[rav3]

16 minutes ago, Rondog said:

Driver side front and along back both sides.  Driveway is sloped front to back where truck is parked.

Thanks for your quick reply.  I suspect the shark antennae.  Back stoplight paint has peeled back about 6” so I suspect needs caulked as well.  Been parked same location since new.  Exposed to elements.

I notice you have the max tow package with same engine as mine.  Are you towing trailer?  

No. I bought this in 2020 when it came off a GM lease, as a Certified Truck. it had almost every factory option on it including the MAX Towing, so I got whatever it had. 

And I have resealed both Shark Fin & rear high mount light. Several videos on this on YouTube. 

[mikeyk101]

I have had both failures and leaks on my 2016. When the sharkfin leak happened, the dealer replaced the antenna under warranty and pretty sure it was a new design that was supposed to prevent this from happening again. You might want to check and see if the 2014 also had an updated design.