The Seth Wadley Promise is a Lifetime Engine Guarantee, Lifetime Oil Changes, Lifetime Multi-point Inspections, Lifetime Pre-Vacation Vehicle Check-Up, Identity Theft Protection for 1 year, Road Hazard Tire & Wheel Coverage for 1 year, Dent & Ding Coverage for 1 year, Windshield Coverage for 1 year, Towing for 1 year, Enrollment in our Difference Rewards Program. All at NO COST to you! Come Experience the Seth Wadley Difference!!
2026 Onyx Black GMC Sierra 3500HD Denali Ultimate 4D Crew Cab 4WD Duramax 6.6L V8 Turbodiesel 10-Speed Automatic

This GMC Sierra 3500HD has many features and is well equipped including, Lifetime Engine Guarantee, Lifetime Oil Changes.
HOME OF THE SETH WADLEY PROMISE OIL CHANGES AND ENGINES FOR LIFE. PUT A LITTLE GRAVEL IN YOUR TRAVEL AND SEE US I-35 EXIT 72 PAULS VALLEY! Advertised pricing is believed to be accurate, but cannot be guaranteed, call dealer to confirm. Residency restrictions may apply to manufacturer rebates and incentives, see dealer for details. State/local taxes, title fees, and not included in advertised price. Price includes dealer $799 documentation fee.