Warning Problems of GMC Sierra 2500

Known issue and has been attributed to a manufacturing defct, but no recall- leaking headlight caused damage to headlight- now turn signal and headlight do not work. Entire assembly needs to be replaced, gm / extended warranty company will not cover, this safety part. Head light and turn signal were working on the way to the dealer, 1 month later when we picked it up - right turn signal malfuction reading appeared on dash, headlight blinking and will not work. Picked up on Friday 1/30/25, and made an appointment for the following Wednesday to take it back in. Was told by dealer today that the replacement will not be covered and will cost $2100. 00 to replace. This is a safety part and the truck can not be driven legally or safely without both headlights working.

See all problems of the 2021 GMC Sierra 2500 🔎.

The systems have become unavailable. Took to dealership and they were told it just needed a software update. Dealer performed update gm sent and did not work. Dealer was told gm engineers would need to find a fix. I complained to gm and asked that they replace the cameras, especially because the vehicle is under warranty, and I was told no because that won't fix the issue. They don't even know what needs to be done to fix the issue though, but won't try a camera swap. They told me I need to take it back to the dealer so they can run diagnostics on it when the issue happens. I don't know what is so hard to understand that the issue is always there; the systems don't work and my dash always has the light the forward collision system not on and given a message when I start the truck that it is not available. This began to be an issue around 9000 miles. It first started by saying window camera blocked due to frost, but when it was clear, and I cleaned every camera and sensor, it still would not come on. This was 1. 5 months ago. I don't understand why they are not trying to expedite fixing this safety issue. The dealer can't do anything until gm tells them to change out camera or send another fix, but there is no software fix available. I can forward emails between myself and gm and you can clearly see they are not listening. If that would be helpful, please let me know how to forward them.

See all problems of the 2024 GMC Sierra 2500 🔎.