2021 GMC Sierra 1500 4WD Crew Cab 147 AT4 â" Duramax 3L I-6 diesel direct injection with intercooled turbo, 277HP paired to a 10-speed automatic; fuel-efficient diesel torque for towing and long drives. Pricing has recently shifted, so interested buyers should act promptly to lock in current value while inventory lasts.
AT4 Value Package â" Adds practical upgrades that increase the truckâs everyday utility and resale appeal, giving you more capability and convenience for the price.
Technology Package â" Brings a suite of camera views and a head-up display to keep critical information and surroundings easily visible, helping you drive with greater awareness and confidence.
Driver Alert Package II â" Provides active safety systems like adaptive cruise and lane assistance to reduce fatigue and help prevent collisions on long highway trips.
AT4 CarbonPro Edition â" Reinforces the truck with composite and specialty materials for a tougher bed and body that stand up to heavy use while maintaining a distinct look.
Driver Alert Package I â" Supplies helpful proximity and blind-spot alerts plus parking sensors so maneuvering in tight spaces and backing up around obstacles is less stressful.
Preferred Equipment Group 4SB â" Includes trailering-focused tools and vehicle health reminders that simplify towing setup and help protect your investment when hauling.
AT4 Preferred Package â" Enhances cabin comfort and connectivity with premium audio, wireless charging and a garage door opener so daily driving feels more polished and convenient.
Smart device mirroring â" Lets you access phone apps and media through the Sierraâs infotainment screen, so you can get directions, calls and entertainment with less distraction.
Forward collision mitigation â" Actively watches the road ahead and readies braking responses to help prevent or lessen the impact of forward collisions.
Front pedestrian impact prevention â" Detects pedestrians in the truckâs path and can take automatic steps to avoid or reduce the severity of a collision for added peace of mind in busy areas.
Mobile hotspot â" Provides onboard Wi-Fi so passengers can stay connected on the go without draining individual device data plans.
Rear camera â" Improves rear visibility when reversing or hitching, giving you a clearer view of obstacles and enhancing overall safety.
Lane departure prevention â" Helps keep the Sierra centered in its lane by applying corrective measures if unintentional drifting is detected.
Adaptive cruise control â" Maintains your set speed while automatically managing distance to the vehicle ahead, easing stress on long drives.
Head-up display â" Projects vital driving information onto the windshield so you can keep your eyes forward while monitoring speed and navigation prompts.
Combining diesel torque, a sophisticated 10-speed automa
