Why buy this vehicle from Flannery Auto Mall?
This vehicle has been hand-selected, professionally inspected, and serviced by our experienced technicians before being offered for sale. We do not shortcut reconditioning or push problem vehicles our pricing reflects condition, transparency, and peace of mind, not just a number on a screen.
? Thorough multi-point inspection completed
? Vehicle history reviewed
? Clean, ready-to-drive condition
Family owned and serving our community since 1938, Flannery Auto Mall has built its reputation on straightforward transactions and standing behind the vehicles we sell. Many listings may look similar online, but condition, inspection, and dealer reputation matter long after the purchase.
This vehicle is backed by the GM CarBravo program and includes a 12-month / 12,000-mile limited warranty for added peace of mind. Recent service has been completed please ask for details.
If you value a well-prepared vehicle, factory-backed protection, and a
- One Owner
- 3.0L Duramax Diesel Turbocharged Engine with 460 lb-ft of torque
- Spray-On Bed Liner with GMC logo
- SLT Premium Package with 20 polished aluminum wheels and chrome assist steps
- 8 Premium GMC Infotainment with Navigation
- Bose Premium Audio System with SiriusXM 360L
- Wireless Charging
- Driver Alert Package I with front and rear park assist, lane change alert, and rear cross traffic alert
- Heated and ventilated front seats with heated steering wheel
- ProGrade Trailering System with integrated trailer brake controller
- 4WD with heavy-duty rear locking differential
- Remote vehicle starter and keyless open and start
- All-weather floor liners
- 120-volt bed-mounted power outlet
This 2020 GMC Sierra 1500 SLT represents capable, well-equipped truck ownership. The 3.0L Duramax diesel engine delivers strong torque and fuel efficiency, achieving 22 MPG city and 26 MPG highway. Combined with the 10-speed automatic transmission and 4WD capability, this Sierra handles both daily driving and serious work with confidence.
The SLT trim provides genuine comfort and convenience. Heated and ventilated front seats keep you comfortable in any season, while the premium Bose audio system and 8-inch infotainment display with navigation make every drive more enjoyable. Wireless charging and multiple USB ports ensure your devices stay powered throughout the day.
This truck is designed for those who need genuine trailering capability. The ProGrade Trailering System includes hitch guidance with hitch view, an integrated trailer brake controller, and an in-vehicle trailering app. The heavy-duty rear locking differential and auxiliary transmission oil cooler support confident towing. Chrome assist steps and the spray-on bed liner add both functionality and protection.
Safety and driver assistance features come standard with the Driver Alert Package I, which includes front and rear park assist, lane change alert with side blind zone alert, and rear cross traffic alert. The power sliding rear window, remote keyless entry, and keyless start make daily operation intuitive and secure.
With one owner, comprehensive inspection completed, and recent service performed, this Sierra is ready for ownership. The combination of diesel efficiency, premium appointments, and proven GMC reliability makes this truck a practical choice for buyers seeking capability without compromise.
Payment shown is for illustrative purposes only and based on approved credit, specific term length, and lender programs. Taxes, title, license, and fees are additional. Not all buyers will qualify. See dealer for complete details