GM definitely has a problem with their rear tail light bulb main sockets corroding. I have a 2015 gmc sierra 2500 hd and i had issues with the right side turn signal main socket corroding and that was 3 years and 6 months after i bought it and of course the warranty had expired with 25,000 miles on it and dealership basically told me we can replace it for you cost of parts and labor, so I got a new left side wiring and connectors and did it myself part was around 75 dollars and took me about an hour to replace. Now i am having the same issue a year and a half latter with the left side so another wiring harness and and another 70 bucks gone. GM doesn't care about their product and i even went as far as filing a complaint with NHTSA, said they would look into it but never heard anything back.
GM definitely has a problem with their rear tail light bulb main sockets corroding. I have a 2015 gmc sierra 2500 hd and i had issues with the right side turn signal main socket corroding and that was 3 years and 6 months after i bought it and of course the warranty had expired with 25,000 miles on it and dealership basically told me we can replace it for you cost of parts and labor, so I got a new left side wiring and connectors and did it myself part was around 75 dollars and took me about an hour to replace. Now i am having the same issue a year and a half latter with the left side so another wiring harness and and another 70 bucks gone. GM doesn't care about their product and i even went as far as filing a complaint with NHTSA, said they would look into it but never heard anything back.