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8,914 listings
- Price Drop$29,368great price$4,200 below market
- 39,010 miles
- No accidents, 2 owners, personal use
- 5'10” bed, 2.7l, 4cyl
- Randy Wise Buick GMC (272 mi away)
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Located in Fenton, MI / 272 miles away from Rockford, IL
2020 GMC Sierra 1500 SLE 8-Speed Automatic, 4WD, Black Cloth.Certification Program Details: Our Car Bravo Certified Pre-Owned vehicles include a 6 M...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
20 Combined MPG (19 City/22 Highway)
Listing Information:
VIN: 1GTP9BEK1LZ335326
Stock: B241550B
Certified Pre-Owned: Yes
Listed since: 03-17-2025 - New Listing$32,149great price$5,020 below market
- 117,440 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 3l, 6cyl
- City Chevrolet (199 mi away)
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Located in Columbia City, IN / 199 miles away from Rockford, IL
Summary.Vehicle DetailsExperience the robust performance and refined luxury of the 2020 GMC Sierra 1500 SLT, a meticulously maintain...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9DET5LG314258
Stock: FD7505A
Certified Pre-Owned: No
Listed since: 03-17-2025 - Price Drop$41,584great price$8,116 below market
- 91,728 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 6.2l, 8cyl
- AutoNation GMC Mendenhall (498 mi away)
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Located in Memphis, TN / 498 miles away from Rockford, IL
Denali Ultimate PackageDenali Carbonpro EditionLpo; 22" (55.9Cm) High Gloss Black WheelsEngine; 6.2L Ecotec3 V8Lpo; Performance Upgrade PackageTe...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GTU9FEL1LZ255690
Stock: LZ255690
Certified Pre-Owned: No
Listed since: 03-08-2025 - $37,486great price$4,785 below market
- 43,599 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 3l, 6cyl
- Bergstrom Auto (161 mi away)
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Located in Green Bay, WI / 161 miles away from Rockford, IL
2020 GMC Sierra 1500 Elevation 4WD Onyx Black 10-Speed Automatic 3.0L I6 10-Speed Automatic, 4WD, Jet Black Cloth, 10-Way Power Driver Seat Adjuster w...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9CET4LG447278
Stock: I4986
Certified Pre-Owned: No
Listed since: 03-14-2025 - $26,995great price$4,888 below market
- 120,109 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 5.3l, 8cyl
- Laura Buick GMC (252 mi away)
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Located in Collinsville, IL / 252 miles away from Rockford, IL
1-Owner New Vehicle Trade! Elevation 5.3 V8 Crew Cab 4x4. X31, Power Sunroof, Towing Package, Trailer Brake Controller, 20' Wheels, Backup Camera, Bac...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9CED9LG149057
Stock: L252518A
Certified Pre-Owned: No
Listed since: 02-20-2025 - Price Drop$27,744great price$4,322 below market
- 141,590 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 6.2l, 8cyl
- Randy Wise Buick GMC (272 mi away)
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Located in Fenton, MI / 272 miles away from Rockford, IL
ONE-OWNER...NO ACCIDENTS!! 2020 GMC Sierra 1500 Denali, 4Dr Crew Cab, EcoTec3 6.2L V8, 10-Speed Automatic, 4WD, White Frost Tricoat, Navigation System...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GTU9FEL2LZ192924
Stock: B250508A
Certified Pre-Owned: No
Listed since: 02-04-2025 - New Listing$33,859great price$9,539 below market
- 119,738 miles
- No accidents, 1 owner, personal use
- 5'10” bed, 6.2l, 8cyl
- Randy Wise Buick GMC (272 mi away)
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Located in Fenton, MI / 272 miles away from Rockford, IL
2020 GMC Sierra 1500 Denali 10-Speed Automatic, 4WD, Jet Black Leather.Priced below KBB Fair Purchase Price!REASONS YOU SHOULD MAKE THE WISE CHO...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GTU9FEL7LZ175102
Stock: B250942A
Certified Pre-Owned: No
Listed since: 04-21-2025 - $36,410great price$4,949 below market
- 82,148 miles
- No accidents, 1 owner, personal use only
- 6'7” bed, 3l, 6cyl
- Umansky Toyota (81 mi away)
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Located in Milwaukee, WI / 81 miles away from Rockford, IL
DURAMAX TURBO 3.0L DIESEL, Take on any challenge with this 2020 GMC Sierra 1500 AT4, featuring a rugged Gray exterior and a premium Jet Black interior...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GTU9EET3LZ321103
Stock: 44507A
Certified Pre-Owned: No
Listed since: 02-25-2025 - Price Drop$34,495great price$6,986 below market
- 83,976 miles
- No accidents, 2 owners, personal use only
- 5'10” bed, 3l, 6cyl
- Laura Buick GMC (252 mi away)
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Located in Collinsville, IL / 252 miles away from Rockford, IL
Recent Trade, Sold Here New! SLT 3.0 Duramax Turbo Diesel Crew Cab 4x4. X31, Navigation System, Power Sunroof, Towing Package, Trailer Brake Controlle...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9DET4LG127254
Stock: L246447A
Certified Pre-Owned: No
Listed since: 12-05-2024 - Price Drop$29,488great price$5,590 below market
- 69,981 miles
- 1 accident, 1 owner, personal use only
- 6'7” bed, 3l, 6cyl
- Randy Wise Buick GMC (272 mi away)
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Located in Fenton, MI / 272 miles away from Rockford, IL
2020 GMC Sierra 1500 SLE 10-Speed Automatic, 4WD, Black Cloth.Certification Program Details: Our Car Bravo Certified Pre-Owned vehicles include a 6 ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GTV9BET3LZ179354
Stock: B250663A
Certified Pre-Owned: Yes
Listed since: 03-28-2025 - New Listing$28,500great price$3,363 below market
- 98,010 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 5.3l, 8cyl
- Dave Sinclair Ford (268 mi away)
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Located in Saint Louis, MO / 268 miles away from Rockford, IL
Show your rebellious side with our One Owner, Accident Free 2020 GMC Sierra 1500 Elevation Crew Cab 4X4 that's ready to push the limits with the Conve...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9CED3LG107810
Stock: 5053101
Certified Pre-Owned: No - Price Drop$27,200good price$2,891 below market
- 168,029 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 5.3l, 8cyl
- McCarthy Chevrolet Lee's Summit (363 mi away)
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Located in Lees Summit, MO / 363 miles away from Rockford, IL
Discover the perfect blend of power, luxury, and versatility with the 2020 GMC Sierra SLT. This premium pickup truck is engineered to deliver exceptio...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
19 Combined MPG (16 City/22 Highway)
Listing Information:
VIN: 1GTU9DED9LZ286652
Stock: UL26116A
Certified Pre-Owned: No
Listed since: 03-17-2025 - $37,995good price$5,427 below market
- 85,138 miles
- No accidents, 2 owners, personal use only
- 5'10” bed, 3l, 6cyl
- Laura Buick GMC (252 mi away)
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Located in Collinsville, IL / 252 miles away from Rockford, IL
1-Owner New Vehicle Trade! Denali 3.0 Duramax Turbo Diesel Crew Cab 4x4. Navigation System, Power Sunroof, Towing Package, Trailer Brake Controller, 2...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9FET1LG386716
Stock: L253685A
Certified Pre-Owned: No
Listed since: 03-27-2025 - New Listing$35,777good price$4,842 below market
- 89,636 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 6.2l, 8cyl
- Todd Wenzel Buick GMC Of Davison (284 mi away)
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Located in Davison, MI / 284 miles away from Rockford, IL
Clean CARFAX. Stand tall with exclusive style and premium performance in our 2020 GMC Sierra 1500 Denali Crew Cab 4X4 that's the pinnacle of Profess...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: Yes
Features and Specs:
Listing Information:
VIN: 1GTU9FELXLZ112995
Stock: CD250788A
Certified Pre-Owned: No
Listed since: 02-17-2025 - $29,400good price$2,782 below market
- 129,334 miles
- No accidents, 3 owners, personal use only
- 5'10” bed, 5.3l, 8cyl
- Marthaler Chevrolet of Glenwood (395 mi away)
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Located in Glenwood, MN / 395 miles away from Rockford, IL
GMC ** LOCAL TRADE **, ** REAR-VIEW CAMERA **, ** HEATED AND VENTILATED SEATS **, ** HEATED STEERING WHEEL **, ** MP3 AND IPOD COMPATIBLE **, ** Bluet...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
19 Combined MPG (16 City/22 Highway)
Listing Information:
VIN: 1GTU9DED0LZ266628
Stock: 250500D
Certified Pre-Owned: No
Listed since: 03-12-2025 - $35,562good price$4,563 below market
- 97,767 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 6.2l, 8cyl
- Woodhouse Chrysler Dodge Jeep Ram (376 mi away)
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Located in Sioux City, IA / 376 miles away from Rockford, IL
Certified. White Frost Tricoat 2020 GMC Sierra 1500 SLT 4WD 10-Speed Automatic EcoTec3 6.2L V8 10-Way Power Driver Seat Adjuster w/Lumbar, 10-Way Powe...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9DEL7LG218812
Stock: DS250070A
Certified Pre-Owned: No
Listed since: 09-21-2024 - Price Drop$38,860good price$4,153 below market
- 51,546 miles
- No accidents, 2 owners, personal use
- 5'10” bed, 6.2l, 8cyl
- Team Toyota (454 mi away)
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Located in Steubenville, OH / 454 miles away from Rockford, IL
Thank you for choosing Team Automotive! We take pride in the inventory we share with our community. EVERY vehicle must pass a detailed inspection and ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9FEL9LG246428
Stock: 24B56
Certified Pre-Owned: No
Listed since: 06-20-2024 - $41,999good price$3,619 below market
- 19,050 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 5.3l, 8cyl
- Betten Chevrolet Cadillac GMC Buick (155 mi away)
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Located in Muskegon, MI / 155 miles away from Rockford, IL
Priced below KBB Fair Purchase Price! White Frost Tricoat 2020 GMC Sierra 1500 SLT 4WD 10-Speed Automatic EcoTec3 5.3L V8 10-Speed Automatic, 4WD, Dar...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
19 Combined MPG (16 City/22 Highway)
Listing Information:
VIN: 3GTU9DED0LG144769
Stock: 55389A
Certified Pre-Owned: No
Listed since: 04-18-2025 - $46,999good price$3,846 below market
- 33,383 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 6.2l, 8cyl
- Bowser Hyundai (490 mi away)
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Located in Pleasant Hills, PA / 490 miles away from Rockford, IL
Recent Arrival! Priced below KBB Fair Purchase Price! Odometer is 21989 miles below market average! CARFAX One-Owner. Clean CARFAX. 2020 GMC Certified...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GTU9FEL6LZ161448
Stock: GT25312A
Certified Pre-Owned: No
Listed since: 04-09-2025 - $41,823good price$5,688 below market
- 70,346 miles
- No accidents, 2 owners, personal use only
- 5'10” bed, 6.2l, 8cyl
- Dellen Chevrolet GMC (239 mi away)
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Located in Greenfield, IN / 239 miles away from Rockford, IL
Priced below KBB Fair Purchase Price! **NAVIGATION!**, **NON-SMOKER!**, **GM CERTIFIED - 12 MONTHS 12K MILE BUMPER TO BUMPER PLUS MAINTENANCE!!**, **L...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9FEL8LG434874
Stock: B12015
Certified Pre-Owned: Yes
Listed since: 04-01-2025 - $40,900good price$5,212 below market
- 57,893 miles
- No accidents, 1 owner, personal use
- 5'10” bed, 3l, 6cyl
- Junction Buick GMC (405 mi away)
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Located in Chardon, OH / 405 miles away from Rockford, IL
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9FET1LG424882
Stock: B424882L
Certified Pre-Owned: Yes
Listed since: 03-31-2025
Showing 1 - 21 out of 8,914 listings
Consumer Reviews for the GMCÂ Sierra 1500
Read recent reviews for the GMCÂ Sierra 1500
Good but not class leading
Davelv, 07/08/2020
2020 GMC Sierra 1500 Denali 4dr Crew Cab 6.6 ft. SB (5.3L 8cyl 8A)
Just put 8500 miles in 7 weeks on a new 2020 Sierra 1500 Denali with the 3.0 Duramax. Overall mpg was 24 with highway speeds at 75 to 80 mph. Driving at 55 mph in construction zones netted 40 to 50 mpg. Fantastic engine. Ride is smooth. Seats are comfortable. Easy to drive all day. However.... the navigation voice input is useless as it can't recognize most requests. Navigation … also will try to send you down a goat path which might be on the maps but is not a real road. And worse it still has the 2016-2018's occasional problem of saying go right when the direction is really left, and vice-versa. Expect to always have to use Apple Carplay as backup for finding stuff and getting good directions. Also the screen is small and can't adequately display maps and music info at the same time. Tailgate is very heavy, as is its subdoor which is tough to close when the gate is down. Truck came with an electrical cable hanging from underneath that if it had caught on something would have torn it away - but was easily re-positioned to tuck it out of harms way. Heads-up display is nice, but the navigation map doesn't fully translate to it, just arrows and road numbers. Radio when it starts in a garage says no satellite signal message which doesn't go away until the channel is changed in the clear. DEF usage about 1 gallon/1000 miles. The 3.0 Duramax starts quickly and idles at 300 rpm and is almost unnoticeable at stop lights. Definitely suggest getting a start/stop eliminator since otherwise it resets every time the engine starts. Lane keeping is weaker than the 2016-2018 models, and severely lags other manufacturer's capabilities to self-drive for extended periods. Adaptive cruse control uses camera and shuts off when driving into the sun, but the standard cruise can still be used - a radar unit would eliminate this problem. Interior has a lot of plastic on the doors and dash that scratches easily. Sunroof is still only a small single pane instead of dual pane. It is a nice vehicle but would be fantastic with technology upgrades, higher interior quality availability, and some luxury options, e.g. dual pane sunroof, rear window shades, 20 way seats. Note that Model selected was for the 5.3L, not 3.0 Duramax as Edmunds doesn't list it, but this review is for the 3.0 Duramax.
Used 2020 GMC Sierra 1500 in Rockford, IL Values
Estimated values
2020 GMC Sierra 1500 SLE 4dr Crew Cab 4WD 5.8 ft. SB (2.7L 4cyl Turbo 8A) with no options
| Condition | Trade-In | Private Party | Dealer Retail |
|---|---|---|---|
| Outstanding | $23,702 | $25,591 | $27,412 |
| Clean | $23,200 | $25,033 | $26,800 |
| Average | $22,363 | $24,105 | $25,778 |
| Rough | $21,275 | $22,897 | $24,450 |
The average list price of a used 2020 GMC Sierra 1500 in Rockford, Illinois is $34,981. The average mileage on a used GMC Sierra 1500 2020 for sale in Rockford, Illinois is 86,164. Based on the average mileage of 86,164 for used 2020 GMC Sierra 1500 for sale in Rockford, IL and using an average vehicle condition rating, which means the vehicle may have a few mechanical and/or cosmetic problems and may require a considerable amount of reconditioning, we appraise the average trade-in value of a used GMC Sierra 1500 2020 in Rockford, Illinois to be $22,363.
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