25 listings from 11 dealers nationwide. Prices range from $19,999 to $34,590. Median price is $28,200.
The 2018 GMC Sierra 1500 is currently available from 11 dealers on Searchshop with 25 active listings. Prices range from $19,999 to $34,590. Median price is $28,200. 12 other model years are also available, which gives you a reference point for how the Sierra 1500 has held value.
Asking prices show a moderate spread, typical for this model year — pay attention to mileage and condition when comparing listings.
Inventory is concentrated across California, Null, Florida, so buyers in those regions will find the most local options.
For a 8-year-old Sierra 1500, prioritize a pre-purchase inspection by an independent mechanic who knows the model. Ask specifically about common 2018 model-year issues, verify the title is clean, and assume any "we just replaced…" claim needs paperwork to back it up.
