[Home](/) / [Used vehicles](/used-vehicles/) / [GMC](/used-vehicles/gmc/) / [Sierra 1500](/used-vehicles/gmc/sierra-1500/) Used · Covert Buick GMC Bee Cave # 2021 GMC Sierra 1500 SLT VIN 3GTU9DED5MG142372 · Stock U403229A ![2021 GMC Sierra 1500 SLT in Summit White, photo 1 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Facebfdcf-8f7a-493f-87d7-9c7a3d9220e9.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 2 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fb1301898-795b-4218-aa5f-720db6e9e1ce.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 3 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fef4a045e-9de1-4020-aaaf-d9f49dcc7c9b.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 4 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F2af5bc3c-fc9b-4f45-b630-f726a2f107c7.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 5 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F180bee9f-ed00-4f05-8d3c-a2bcbb73e2be.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 6 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F83c8304e-c4ba-48e1-bc0c-82916473953e.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 7 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F815d24c3-50b3-47d3-84a1-fec58455df77.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 8 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fb832c80a-9f38-46e4-9675-85ddf0238d33.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 9 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F06f95acd-9a0a-47bf-980c-d6e3bdfc8689.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 10 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fee51f3bc-40b6-4497-9d54-25d6c30fee3d.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 11 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F875ef603-7aa2-4516-b0e3-f2bf665d7c4c.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 12 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F2116b323-d474-48ef-8242-88dfeb969489.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 13 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fe6b788ea-764a-4fb3-b6ef-a52fa678c94f.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 14 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fff380909-78bb-46b4-b42b-8fb289f6b4a3.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 15 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fbe1e7417-2a91-4f88-8159-a2d3bd17f97a.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 16 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F5bb3c215-0e43-452b-9ba0-eafd0994d727.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 17 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F9d9ca172-f6a0-4653-814c-28b67f1f4e7e.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 18 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fe839127b-b8eb-42fc-b52d-344e3f0bfde3.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 19 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Ff0236c7c-29ba-4f3c-a54b-2ec0036562c4.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 20 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F3bd80224-e763-46c8-9660-dd0803bbc07b.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 21 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F0206652f-0675-4696-920f-b92a9fa89f30.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 22 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F27044746-856f-4201-b4c4-f8f29978a69a.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 23 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F75abdc8a-49ca-47e2-ace0-ad41aa5dd974.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 24 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fd11ef7e1-f15e-469a-8076-0ff474b88868.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 25 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fb108a456-15c9-4b52-b01f-ca66598ad01e.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 26 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F7fe05d0f-5900-490c-a270-786ab278d90e.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 27 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fe8e14ed7-6cf1-4f68-afbb-65fffe73aa29.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 28 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fa1f6e970-bb1c-41a7-a853-186a7b07851c.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 29 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fe16e59ce-f18f-486b-a1f1-3b0d5ecc43f0.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 30 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F21daf467-88ad-4e26-9470-f5309e6f2699.png&w=3840&q=80)![2021 GMC Sierra 1500 SLT in Summit White, photo 31 of 31](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Fa783a882-317b-4e94-904b-e0917197118c.png&w=3840&q=80) 31 photos Price$31,877 Price excludes tax, title, license and the $225 documentary fee. [**Free CARFAX report**See this Sierra 1500's accident, owner and service history. (opens CARFAX in a new tab)](https://www.carfax.com/VehicleHistory/p/Report.cfx?partner=DVW%5F1&vin=3GTU9DED5MG142372) [Check availability](/inventory/used-2021-gmc-sierra-1500-slt-4wd-4d-crew-cab-3gtu9ded5mg142372/?form=availability)[Schedule a test drive](/inventory/used-2021-gmc-sierra-1500-slt-4wd-4d-crew-cab-3gtu9ded5mg142372/?form=test-drive)[Ask a question](/inventory/used-2021-gmc-sierra-1500-slt-4wd-4d-crew-cab-3gtu9ded5mg142372/?form=question) [Calculate your payment](https://app.autoapr.com/reveal/4d0nhx37/3GTU9DED5MG142372) ## Calculate your payment Close [Trading in your car for this GMC Sierra 1500?Get an offer for it and put it toward this one.](/value-your-trade/) Covert Buick GMC Bee Cave[(512) 954-9290](tel:+15129549290) 16501 Sweetwater Village Dr Bldg 1, Austin, TX 78738 Sales: Monday to Saturday, 9 AM to 7 PM; closed Sunday ### Details Mileage 117,716 mi Engine 5.3L V8 Transmission 10-speed automatic Drivetrain 4WD Engine EcoTec3 5.3L V8 Body 4D Crew Cab Exterior Summit White Interior Jet Black Fuel Gasoline ### Equipment 136 #### Packages * Driver Alert Package I * Preferred Equipment Group 4SA * SLT Convenience Package * Texas Edition SLT Premium Package 3 more * Trailering Package * X31 Off-Road Package * Texas Edition Badging #### Safety * Security system * Theft Deterrent System (Unauthorized Entry) * Lane Change Alert w/Side Blind Zone Alert * Rear Cross Traffic Alert 12 more * Ultrasonic Front & Rear Park Assist * Traction control * 4-Wheel Disc Brakes * ABS brakes * Dual front impact airbags * Dual front side impact airbags * Low tire pressure warning * Occupant sensing airbag * Overhead airbag * Brake assist * Electronic Stability Control * Panic alarm #### Technology * 6 Speakers * 6-Speaker Audio System Feature * AM/FM radio: SiriusXM with 360L * Premium audio system: GMC Infotainment System 15 more * Radio data system * Radio: Premium GMC Infotainment Sys w/Multi-Touch * SiriusXM w/360L * Steering Wheel Audio Controls * 12-Volt Rear Auxiliary Power Outlet * 120-Volt Bed Mounted Power Outlet * 120-Volt Instrument Panel Power Outlet * 2 USB Ports * 2 USB Ports (1st Row) * 4G LTE Wi-Fi Hotspot Capable * Apple CarPlay/Android Auto * GMC Connected Access Capable * OnStar & GMC Connected Services Capable * Rear Dual USB Charging-Only Ports * Steering wheel mounted audio controls #### Interior * Automatic temperature control * Electric Rear-Window Defogger * Front dual zone A/C * Rear window defroster 51 more * Driver Memory * Memory seat * Power driver seat * Power Front Passenger Windows w/Express Up/Down * Power Front Windows w/Driver Express Up/Down * Power Rear Windows w/Express Down * Remote Vehicle Starter System * Universal Home Remote * Electrical Lock Control Steering Column * Manual Tilt-Wheel & Telescoping Steering Column * Keyless Open & Start * Power Door Locks * LED Cargo Area Lighting * All-Weather Floor Liner (LPO) * Auto-dimming Rear-View mirror * Color-Keyed Carpeting Floor Covering * Floor-Mounted Center Console * Heated steering wheel * Rear reading lights * Rear seat center armrest * Voltmeter * 10-Way Power Driver Seat Adjuster w/Lumbar * 10-Way Power Passenger Seat Adjuster w/Lumbar * Front 40/20/40 Split-Bench Seat * Heated 2nd Row Outboard Seats * Heated Driver & Front Outboard Passenger Seating * Heated front seats * Perf Leather-Appointed Front Outboard Seat Trim * Power passenger seat * Ventilated Driver & Front Passenger Seats * Front Center Armrest w/Storage * Power Sliding Rear Window w/Rear Defogger * Air Conditioning * Power windows * Remote keyless entry * Speed control * Compass * Driver door bin * Driver vanity mirror * Front reading lights * Illuminated entry * Outside temperature display * Overhead console * Passenger vanity mirror * Tachometer * Telescoping steering wheel * Tilt steering wheel * Trip computer * Front Bucket Seats * Split folding rear seat * Passenger door bin #### Exterior * Front fog lights * Perimeter Lighting * Auto-dimming door mirrors * Bumpers: chrome 15 more * Chrome Grille * Chrome Wheel To Wheel Assist Steps * Rear step bumper * Rear Wheelhouse Liners * X31 Hard Badge * 20" x 9" Polished Aluminum Wheels * Wheel Locks (Set of 4) (LPO) * Wheels: 18" x 8.5" 6-Spoke Machined Aluminum * Deep-Tinted Glass * Delay-off headlights * Fully automatic headlights * Heated door mirrors * Power door mirrors * Alloy wheels * Variably intermittent wipers #### Mechanical * Auto-Locking Rear Differential * Heavy Duty Suspension * Off-Road Suspension * Speed-sensing steering 16 more * Front wheel independent suspension * Hill Descent Control * Dual Exhaust w/Premium Tips * 170 Amp Alternator * Auxiliary External Transmission Oil Cooler * Heavy-Duty Air Filter * ProGrade Trailering System * Front Frame-Mounted Black Recovery Hooks * Hitch Guidance * Hitch Guidance w/Hitch View * In-Vehicle Trailering App * Integrated Trailer Brake Controller * 3.23 Rear Axle Ratio * 4WD * Power steering * Front anti-roll bar ### From the store Call us at 512-954-9290 This 2021 GMC Sierra 1500 SLT Crew Cab delivers impressive capability with a powerful EcoTec3 5.3L V8 engine paired to a smooth 10-speed automatic transmission. Built for both work and weekend adventures, this white truck features 4WD with the X31 Off-Road Package, all-terrain tires, and a range of premium features designed for comfort and utility. \- 4WD with Auto-Locking Rear Differential \- Texas Edition SLT Premium Package \- X31 Off-Road Package with Hill Descent Control \- ProGrade Trailering System with Integrated Trailer Brake Controller \- Heated leather seats with ventilation \- Remote vehicle starter and keyless start \- 120-volt power outlet and dual USB charging ports \- Chrome assist steps and LED cargo area lighting \- Dual exhaust with premium tips \- Lane change alert with side blind zone alert The SLT trim combines functionality with refinement, offering leather interior, dual-zone climate control, and an infotainment system with Apple CarPlay and Android Auto. With advanced safety features including rear cross traffic alert, ultrasonic park assist, and hitch guidance, this Sierra is ready for your next adventure. Stop by and experience the quality and performance this truck has to offer. Call us at 512-954-9290 ## Check availability Close 2021 GMC Sierra 1500 SLTStock U403229A · Covert Buick GMC Bee Cave First name Last name Email Phone An email or a phone number is enough. ZIP code (optional) Leave this field empty Check availability By submitting, you agree that Covert Buick GMC Bee Cave may contact you about this request by phone, text or email. ## Schedule a test drive Close 2021 GMC Sierra 1500 SLTStock U403229A · Covert Buick GMC Bee Cave First name Last name Email Phone An email or a phone number is enough. ZIP code (optional) Preferred day (optional) Time of day (optional)Any timeMorningAfternoonEvening Leave this field empty Schedule a test drive By submitting, you agree that Covert Buick GMC Bee Cave may contact you about this request by phone, text or email. ## Ask a question Close 2021 GMC Sierra 1500 SLTStock U403229A · Covert Buick GMC Bee Cave First name Last name Email Phone An email or a phone number is enough. ZIP code (optional) Your question Leave this field empty Ask a question By submitting, you agree that Covert Buick GMC Bee Cave may contact you about this request by phone, text or email. ## Similar vehicles in stock [All used vehicles →](/used-vehicles/) [![2016 GMC Sierra 1500 Denali in Onyx Black](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F676b61b3-ac9b-411d-9be2-591f72043323.png&w=3840&q=80)Used · Covert CDJR Bee Cave2016 GMC Sierra 1500 Denali57,157 mi · Onyx Black · 4WDPrice$32,227Stock DP1651 · VIN 3GTU2PECXGG352323](/inventory/used-2016-gmc-sierra-1500-denali-4wd-4d-crew-cab-3gtu2pecxgg352323/)[![2023 GMC Sierra 1500 Elevation in Onyx Black](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F686d7d8d-17a1-4102-b539-f15e65252592.png&w=3840&q=80)Used · Covert Buick GMC Bee Cave2023 GMC Sierra 1500 Elevation60,327 mi · Onyx Black · 4WDPrice$33,515Stock G395164A · VIN 1GTRUJEK0PZ293903](/inventory/used-2023-gmc-sierra-1500-elevation-4wd-double-cab-1gtrujek0pz293903/)[![2021 GMC Sierra 1500 SLT in Steel Metallic](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F5ad14d80-d492-4b87-afd9-36305e9d7ae9.png&w=3840&q=80)Used · Covert Buick GMC Bee Cave2021 GMC Sierra 1500 SLT96,613 mi · Steel Metallic · RWDPrice$28,813Stock G502512A · VIN 1GTP8DED7MZ215385](/inventory/used-2021-gmc-sierra-1500-slt-rwd-4d-crew-cab-1gtp8ded7mz215385/)[![2020 Ram 1500 Limited in Diamond Black](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F6f0edc57-1c20-4faa-b2fc-ff6b25e39281.png&w=3840&q=80)Used · Covert CDJR Bee Cave2020 Ram 1500 Limited100,406 mi · Diamond Black · 4WDPrice$31,333Stock N428486A · VIN 1C6SRFHT2LN375872](/inventory/used-2020-ram-1500-limited-4wd-4d-crew-cab-1c6srfht2ln375872/)[![2020 Ford F-150 Lariat in Oxford White](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2Feb97eaba-5f5e-4a06-a8da-fd1377b588c7.png&w=3840&q=80)Used · Covert CDJR Bee Cave2020 Ford F-150 Lariat56,567 mi · Oxford White · RWDPrice$33,497Stock DP1650 · VIN 1FTEW1CP1LFA14235](/inventory/used-2020-ford-f-150-lariat-rwd-4d-supercrew-1ftew1cp1lfa14235/)[![2024 Chevrolet Silverado 1500 Custom in Sterling Gray Metallic](/_next/image/?url=https%3A%2F%2Fassets.cai-media-management.com%2Fresize%2F1024x1024%2Fcommon-vehicle-media%2F231ce2d1-8008-483f-8982-e5d66a6e0cad.png&w=3840&q=80)Used · Covert Buick GMC Bee Cave2024 Chevrolet Silverado 1500 Custom36,051 mi · Sterling Gray Metallic · 4WDPrice$34,477Stock Z359725A · VIN 1GCPDBEK6RZ263062](/inventory/used-2024-chevrolet-silverado-1500-custom-4wd-4d-crew-cab-1gcpdbek6rz263062/)