GMC Resale Value and Trade-In Options

I've been impressed with the overall quality of my GMC Sierra and I'm expecting it to hold its value well when I decide to sell or trade-in. From what I've researched, GMC vehicles tend to retain a significant percentage of their original price after 3-5 years. I'd love to hear from others about their experiences trading in or selling their GMC trucks. Have any of you had success with getting a good deal on a new vehicle using your old GMC as trade-in? What were some factors that affected the value of your trade-in?

I've owned my 2015 GMC Sierra 1500 for 7 years now and I'm impressed with its durability and reliability. When it was time to upgrade, I decided to trade it in at a local dealership. I was surprised by how well the truck held its value, retaining about 60% of its original purchase price. The dealer even offered me a decent trade-in credit towards my new vehicle. I've done some research and found that GMC vehicles tend to hold their resale value quite well compared to other brands. In fact, according to Kelley Blue Book, the GMC Sierra 1500 is one of the top 5 most retained values in its class. I'm glad I chose a GMC and would definitely consider it again if I need to upgrade in the future.