2018 GMC Sierra 3500HD

Additional terms, conditions, and disclosures

All vehicles are one of each and subject to prior sale. All offers expire at the close of business on the date the offer is removed from this website. All financing sales are subject to credit approval. Any agreement is subject to execution of contract documents. A negotiable documentary service fee in an amount up to $200 may be added to the purchase price or capitalized cost. Full self-driving and other vehicle features may not be transferable to the new owner and/or may require a separate payment or subscription through the vehicle manufacturer, e.g., Tesla. Customer is responsible for verifying with the vehicle manufacturer the availability and cost of subscription features. Although customer may be offered additional products and accessories, any additional products and accessories are voluntary. Although we take care to ensure the accuracy of the information on our website, errors can occur. Please verify all information with our dealership representatives and have all understandings regarding the sales terms included the sales contracts. Pricing excludes tax, title, and licensing.

3.99% Financing Through Harborstone Credit Union Disclaimer: Annual percentage rate and other important program information: APR = Annual Percentage Rate. All loans, rates, and terms are subject to credit approval, are subject to change at any time, and must comply with Harborstone Credit Union’s lending policies. Not every applicant will qualify. The promotional APR of 3.99% applies only to loans with a 36‑month term and a minimum credit score of 740. Your rate is based on predetermined credit criteria from a credit reporting agency and may change based on the year, mileage, and condition of the vehicle. Income, debt ratio, employment, and creditworthiness may be considered before the loan is funded. The current APR listed is the “as low as” rate as of May 18, 2026, and is subject to change without notice. Loans financed with Harborstone Credit Union will require a membership share savings with a minimum deposit of $10. All registered owners are required to be signers on the loan and are subject to approval of credit. Title transfer fees are estimated to be $21 in Washington State. We will advise you on any title fees before we fund the loan. Other rates and terms are available. The minimum loan amount is $5,000. This offer is valid on new loans only.



All offers expire June 30, 2026, at 7:00pm. Payment Example: For a 36-month (3-year) $25,000.00 auto loan with an interest rate of 3.99%, the APR would be 3.99% with monthly payments of $737.99. Harborstone Credit Union mailing address: P.O. Box 4207, Tacoma, WA 98438-0207. Harborstone Credit Union is insured by NCUA.