Used 2018 GMC Sierra 1500 Double Cab SLT Pickup 4D 6 1/2 Ft
Pricing
Sign Up for Pricing Updates
Stay up to date by tracking the KBB.com Fair Purchase Price.
Values and Prices
Fair Purchase Price is determined by collecting thousands of actual consumer vehicle purchase prices, plus data from national vehicle registration databases and several other reliable third-party sources.
Estimated Values
Condition | Trade-In Value | Private Party Value | ||
|---|---|---|---|---|
Excellent | $16,830 | $23,200 | ||
Very Good | $16,430 | $22,700 | ||
Good | $15,980 | $22,100 | ||
Fair | $14,880 | $20,600 |
Estimated Trade-In Values for the 2018 GMC Sierra 1500 Double Cab SLT Pickup 4D 6 1/2 ft range from about $14,880 to $16,830 depending on vehicle condition. Estimated Private Party Values range from about $20,600 to $23,200 depending on vehicle condition. Valid for ZIP Code 07852 through 9/16/2026.
2018 GMC Sierra 1500 Double Cab SLT Pickup 4D 6 1/2 ft Depreciation
Login or create a new account to see your vehicle depreciation forecast data.
2018 GMC Sierra 1500 Double Cab SLT Pickup 4D 6 1/2 Ft Annual Depreciation
Year | Vehicle Depreciation* | Resale Value | Trade-In Value | ||
|---|---|---|---|---|---|
2023 | $4,142 | $27,260 | $25,220 | ||
2024 | $4,440 | $22,820 | $20,947 | ||
2025 | $1,840 | $20,980 | $19,300 | ||
Now | + $1,720 | $22,700 | $16,400 |
Unlock Forecast
2-Year Forecasted Depreciation
*Depreciation for the last 12 months of the private party resale value.
2018 GMC Sierra 1500 Double Cab SLT Pickup 4D 6 1/2 Ft Depreciation
Annual Depreciation is an estimation of what your vehicle's value might be over time based on an average of similar vehicles. Estimations are calculated by comparing Kelley Blue Book Private Party Values of vehicles similar to yours over time, as well as forecasts from Manheim Auction data comparing current and projected auction values against current Kelley Blue Book Private Party and Trade-In Values. This is not a guarantee of actual depreciation. Local weather conditions, market factors and driver performance will also impact your vehicle's actual depreciation.
Already Own This Car?
Calculate Your Budget With These KBB.com Tools
Specifications
Dimensions, Weights & Capacities
Curb Weight | 5232 lbs. | ||
|---|---|---|---|
Fuel Capacity | 26.0 gallons | ||
Front Head Room | 42.8 inches | ||
Front Leg Room | 45.3 inches | ||
Max Seating Capacity | 6 | ||
Minimum Ground Clearance | 8.9 inches | ||
Overall Length | 229.5 inches | ||
Front Shoulder Room | 65.9 inches | ||
Towing Capacity, Maximum | 11800 lbs. | ||
Turning Diameter | 46.9 feet | ||
Wheel Base | 143.5 inches | ||
Bed Length | 6.50 feet | ||
Gross Vehicle Weight Rating (GVWR) | 7600 lbs. | ||
Payload Capacity | 1840 lbs. |
Exterior
Alloy Wheels | Available | ||
|---|---|---|---|
Fog Lights | Available | ||
HID Headlights | Available | ||
Number of Doors | 4 doors | ||
Power Folding Exterior Mirrors | Available | ||
Privacy Glass | Available | ||
LED Headlights | Available |
Fuel Economy
City | 16 mpg | ||
|---|---|---|---|
Highway | 22 mpg | ||
Combined | 18 mpg |
Mechanical
Drivetrain | 4WD | ||
|---|---|---|---|
Transmission Type | Automatic | ||
6 speed | Available | ||
Recommended Fuel | Regular | ||
Hill Descent Control | Available | ||
Hill Start Assist | Available | ||
Parking Assist System | Available |
Performance
Horsepower | 355 @ 5600 RPM | ||
|---|---|---|---|
Torque | 383 @ 4100 rpm | ||
Engine | V8, EcoTec3, 5.3 Liter |
Warranty
Basic | 3 years / 36000 miles | ||
|---|---|---|---|
Powertrain | 5 years / 60000 miles | ||
Corrosion | 6 years / 100000 miles |
2018 GMC Sierra 1500 Double Cab SLT Pickup 4D 6 1/2 ft Standard Features
2018 GMC Sierra 1500 Double Cab
KBB.com Review
Kbb.com Expert Rating
Opt for the big 6.2-liter V8 and the right configuration and you’ll get a class-leading 12,500-pound tow rating. The Toyota Tundra can’t match the Sierra’s horsepower and doesn’t offer upscale features like ventilated front seats or adaptive suspension.
If you’re seeking a diesel or turbocharged engine in your next half-ton pickup, the 2018 GMC Sierra is off the list. You can get a diesel in the smaller GMC Canyon, a less expensive option that nearly matches some of the Sierra’s bed and payload figures.
2018 GMC Sierra 1500 Double Cab
KBB.com Consumer Reviews
Consumer Rating
2018 GMC Sierra 1500 Double Cab SLT Pickup 4D 6 1/2 ft Safety
Safety Features & Technology
Crash Test Rating
Compare to Similar Vehicles
 Used 2018 GMC Sierra 1500 Double Cab SLT Pickup 4D 6 1/2 ft |  Used 2018 Toyota Tacoma Double Cab |  Used 2018 Ram 1500 Trucks |  Used 2018 Nissan TITAN XD | ||
|---|---|---|---|---|---|
| Price | $24,200 | $25,000 | $25,200 | $19,450 | |
| KBB.com Rating | 4.0 | 4.4 | 4.4 | 3.9 | |
| Consumer Rating | 4.2 | 4.1 | 4.6 | 4.4 | |
| Fuel Economy | City 16/Hwy 22/Comb 18 MPG | City 18/Hwy 22/Comb 20 MPG | City 15/Hwy 21/Comb 17 MPG | N/A | |
| Fuel Type | Gas | Gas | N/A | N/A | |
| Safety Rating | 5.0 | 4.0 | 4.0 | N/A | |
| Seating Capacity | 6 | 5 | 5 | 6 | |
| Basic Warranty | 3 years or 36000 miles | 3 years or 36000 miles | 3 years or 36000 miles | 5 years or 100000 miles | |
| Horsepower | 355 @ 5600 RPM | 278 @ 6000 RPM | 395 @ 5600 RPM | 310 @ 3200 RPM | |
| Engine | V8, EcoTec3, 5.3 Liter | V6, 3.5 Liter | V8, HEMI, 5.7 Liter | V8, Turbo Diesel , 5.0L | |
| Drivetrain | 4WD | 4WD | 4WD | 4WD |