2020 GMC Sierra 1500 AT4 4WD for Sale in Concord, CAThis used 2020 GMC Sierra 1500 AT4 Crew Cab 4WD in Summit White is available at Lehmer’s Concord GMC. Its 420-horsepower 6.2-liter EcoTec3 V8, 10-speed automatic transmission and four-wheel drive deliver strong acceleration, all-weather traction and premium off-road capability. CARFAX rates it a Great Value at $1,660 below CARFAX Value. Third-party ratings are subject to change.FEATURE HIGHLIGHTS• 6.2-liter EcoTec3 V8 with 420 horsepower and 460 lb-ft of torque• 10-speed automatic transmission and four-wheel drive• AT4 Off-Road Package and four-wheel-drive capability for changing terrain• Technology Package with a head-up display, rear camera mirror and bed-view camera• Adaptive Cruise Control, Automatic Emergency Braking, Forward Collision Alert and Lane Keep Assist• Heated and ventilated perforated leather-appointed front seats with Jet Black and Kalahari accents• Bose premium audio, navigation, Apple CarPlay, Android Auto and wireless phone charging• Blind-spot monitoring, parking assistance and automatic high beamsThis Sierra AT4 suits Bay Area drivers who want one truck for commuting, recreation and demanding weekend use. The Crew Cab provides useful rear-seat room, while the V8 and 4WD system support travel through changing weather, steep grades and unpaved destinations. Its AT4 hardware makes it a practical choice for trips toward Tahoe, the coast or remote trailheads without giving up everyday comfort.Inside, the leather-appointed cabin combines supportive seating with useful technology. Heated and ventilated front seats help across changing Northern California temperatures, while the head-up display and rear camera mirror keep information within the driver’s view. Navigation, smartphone integration, wireless charging and Bose audio make longer drives easier, and the bed-view camera adds visibility when carrying cargo.Stock number 260354A has 114,212 miles and a current market-based price of $33,355. CARFAX identifies personal use and reports a minor-damage rear-end collision on October 29, 2024; the airbags did not deploy. The exact-VIN history also lists the Technology, Premium, Performance, Driver Alert, Preferred and Off-Road packages.For shoppers comparing a used GMC Sierra 1500, 6.2-liter V8 pickup or off-road Crew Cab truck in the San Francisco Bay Area, this 2020 Sierra AT4 offers strong power, advanced driver assistance and a refined leather-trimmed interior.Contact Lehmer’s Concord GMC to confirm availability or schedule a test drive.Looking for a used 2020 GMC Sierra 1500 near Richmond, Dublin or Vacaville? Visit Lehmer’s 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, Lehmer’s 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.For pre-owned vehicles, all pricing is after rebates, if applicable. Factory rebates may not be available with a special alternative APR or lease program and may vary by residency. No sales to dealers, brokers or exporters. Out-of-state customers must be present to purchase. If shipping is required, the dealership must facilitate it. Prices exclude government fees and taxes, finance charges, an $85 documentary fee, a $37 electronic registration fee, emissions testing charges and a $1.75-per-new-tire state fee.