New 2026 GMC Sierra 1500 SLT 4WD for Sale in Concord, CAThis new 2026 GMC Sierra 1500 SLT Crew Cab 4WD in Onyx Black at Lehmers Concord GMC combines diesel efficiency, premium comfort and practical full-size truck capability. It is powered by the Duramax 3.0L Turbo-Diesel engine paired with a 10-speed automatic transmission and four-wheel drive. With the SLT Premium Plus Package, advanced trailering technology and a well-equipped Jet Black interior, this Sierra is built for Bay Area commuting, road trips, towing and everyday truck utility.FEATURE HIGHLIGHTS Duramax 3.0L Turbo-Diesel engine with 10-speed automatic transmission 4WD with Autotrac transfer case and automatic locking rear differential SLT Premium Plus Package with Convenience, Preferred and Sierra Safety Plus equipment Heated and ventilated front bucket seats, heated rear outboard seats and heated steering wheel 13.4-inch GMC Premium Infotainment touchscreen with Google built-in, wireless Apple CarPlay and Android Auto Adaptive Cruise Control, HD Surround Vision and Front and Rear Park Assist ProGrade Trailering System with in-vehicle trailering app and Hitch Guidance with Hitch View GMC MultiPro Tailgate, spray-on bedliner and 120V cargo-bed power outlet 20-inch polished aluminum wheels, all-terrain tires and chrome assist stepsThis Sierra 1500 SLT is a strong fit for drivers who want diesel-powered capability without giving up everyday comfort. The 3.0L Duramax, four-wheel drive, automatic locking rear differential and factory trailering equipment make it well suited for towing, outdoor recreation, job-site use and long-distance travel. Its EPA-rated 24 MPG combined, 22 city and 26 highway also gives commuters and frequent highway drivers useful efficiency for a full-size 4WD pickup.Inside, the SLT Premium Plus Package adds features that make daily ownership noticeably easier. Front occupants get heated and ventilated bucket seats, while rear passengers benefit from heated outboard seating and rear HVAC vents. A Bose premium audio system, wireless phone charging, 12.3-inch digital driver information display, dual-zone climate control, remote start and a power sliding rear window add comfort and convenience.Technology also supports work and trailering. HD Surround Vision helps provide additional visibility around the truck, while Trailer Side Blind Zone Alert, Rear Cross Traffic Braking and the trailer camera provision add useful awareness when maneuvering. The ProGrade Trailering System includes an in-vehicle trailering app plus Hitch Guidance with Hitch View to simplify hookup and trailer management. In the bed, the MultiPro Tailgate, LED cargo lighting, spray-on bedliner and 120V outlet make hauling gear or equipment more practical.For shoppers comparing a new GMC Sierra 1500 Crew Cab, diesel truck or 4WD pickup in the San Francisco Bay Area, this 2026 Sierra 1500 SLT offers Duramax efficiency, premium seating and advanced trailering and camera technology.Contact Lehmers Concord GMC to confirm availability or schedule a test drive.Looking for a new 2026 GMC Sierra 1500 near Richmond, Dublin or Vacaville? Visit Lehmers Concord GMC, a convenient Bay Area GMC destination for drivers near Hanlees Hilltop GMC, Dublin Buick GMC and GMC of Vacaville.Family owned and operated for five generations, Lehmers Concord GMC has served Concord and the San Francisco-Oakland Bay Area since 1928. We proudly assist GMC shoppers from Walnut Creek, Pleasant Hill, Martinez, Richmond, Dublin, Vacaville and surrounding communities.May not represent actual vehicle. (Options, colors, trim and body style may vary) The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price. Price includes: $1500 - Buick & GMC Consumer Cash Program. Exp. 11/02/2026 $500 - GMC Bonus Cash. Exp. 11/02/2026