Water Leak at Center High Mounted Stop Lamp (CHMSL) Warranty Extension XG1

[Diesel85]

TSB: 23-074-23
GROUP 23 - Body

2019 - 2021 (DT) RAM 1500 Pickup

Customers may experience one or more of the following:
• Water on the headliner.
• Water at the back of the cab.
• A leak from the third brake/cargo light/CHMSL.

CAUSE: Degradation of the gasket material.

REPAIR SUMMARY:
This bulletin involves replacing the CHMSL assembly.

POLICY:
Vehicles included in this Technical Service Bulletin have a warranty extension to an 10 Year/150,000 miles
from in service date warranty period for this repair.

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I replaced mine already and will be seeking a refund from Stellantis using the form attached. Please use page #2, fill it out and mail it into Stellantis to claim your refund.

Below is the old versus new:

 

[BigPapa]

This is a 30 year old problem. Why can’t they seal this thing up?

 

[Diesel85]

This is a 30 year old problem. Why can’t they seal this thing up?

My brand new 2007 F150 had the same problem. Ford released a new third brake lamp with a thicker seal like this one. Except Ford didn't do a +1 to their customers and offer a warranty on it like FCA is.