Used 2015 GMC Sierra 1500 for Sale nearModesto, CA

Compare 2015 GMC Sierra 1500 Trims

The Sierra 1500 offers a range of trims from budget-friendly options to well-equipped models, catering to various needs and preferences.

• Starting at $14,240
• Best MPG/MPGe: 18 city / 24 hwy
• Most Popular: SLT Crew Cab 4WD

Trim Overview

Prices updated weekly from CarGurus listings.

Quick Compare Table

Listing prices sourced from CarGurus — updated weekly. OEM specs from manufacturer data.

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Trim Deep Dives

Base Double Cab 4WD — "Who It's For"

The Base Double Cab 4WD is the pick for shoppers who want a capable truck without the extra features that drive up the price.

• Avg. market price: $14,240 (updated weekly)
• MPG/MPGe: 17 city / 22 hwy
• Inventory: 196 listings — lower availability; may limit negotiating room
• View Base Double Cab 4WD listings

SLE Crew Cab — "Who It's For"

The SLE Crew Cab is the pick for shoppers who want a well-rounded truck with modern features without stepping up to the pricier trims.

• Avg. market price: $17,148 (updated weekly)
• MPG/MPGe: 18 city / 24 hwy
• Inventory: 192 listings — lower availability; may limit negotiating room
• View SLE Crew Cab listings

SLE Double Cab 4WD — "Who It's For"

The SLE Double Cab 4WD is the pick for shoppers who want all-wheel drive capability without paying for the higher-end trims.

• Avg. market price: $16,432 (updated weekly)
• MPG/MPGe: 17 city / 22 hwy
• Inventory: 707 listings
• View SLE Double Cab 4WD listings

SLE Crew Cab 4WD — "Who It's For"

The SLE Crew Cab 4WD is the pick for shoppers who want a versatile truck with added features for comfort and convenience.

• Avg. market price: $17,481 (updated weekly)
• MPG/MPGe: 17 city / 22 hwy
• Inventory: 1,317 listings — widest selection in the lineup
• View SLE Crew Cab 4WD listings

SLT Crew Cab — "Who It's For"

The SLT Crew Cab is the pick for shoppers who want a blend of luxury and capability without going for the top-tier Denali.

• Avg. market price: $19,444 (updated weekly)
• MPG/MPGe: 16 city / 23 hwy
• Inventory: 220 listings
• View SLT Crew Cab listings

SLT Double Cab 4WD — "Who It's For"

The SLT Double Cab 4WD is the pick for shoppers who want sporty performance with the added benefit of all-wheel drive.

• Avg. market price: $17,857 (updated weekly)
• MPG/MPGe: 16 city / 22 hwy
• Inventory: 247 listings
• View SLT Double Cab 4WD listings

SLT Crew Cab 4WD — "Who It's For"

The SLT Crew Cab 4WD is the pick for shoppers who want a well-equipped truck with luxury features and strong performance.

• Avg. market price: $20,133 (updated weekly)
• MPG/MPGe: 16 city / 22 hwy
• Inventory: 7,629 listings — widest selection in the lineup
• View SLT Crew Cab 4WD listings

Denali Crew Cab 4WD — "Who It's For"

The Denali Crew Cab 4WD is the pick for shoppers who want the ultimate luxury truck experience with advanced features.

• Avg. market price: $21,359 (updated weekly)
• MPG/MPGe: 16 city / 22 hwy
• Inventory: 5,217 listings — widest selection in the lineup
• View Denali Crew Cab 4WD listings

Trim Recommendations

Most Popular — SLT Crew Cab 4WD

With 7,629 active listings, the SLT Crew Cab 4WD is the clear volume leader in the lineup.

Browse SLT Crew Cab 4WD listings

Best Budget Option — Base Double Cab 4WD

At $14,240 avg market price — below the lineup median of $17,669 — it's the most accessible entry point.

Browse Base Double Cab 4WD listings

Best for Fuel Economy — SLE Crew Cab

The SLE Crew Cab offers the best fuel efficiency at 18 city / 24 hwy.

Browse SLE Crew Cab listings

These recommendations are based on CarGurus' proprietary market data from November 12, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2015 GMC Sierra 1500 cost?

Prices have softened 5.76% compared to this time last year, making it a favorable time to shop this model year.

There are 2,038 listings available, which suggests you have a solid amount of inventory to compare.

Is the 2015 GMC Sierra 1500 a good car?

Generally — the 2015 GMC Sierra 1500 earns a 4.2/5 user rating and a 7.3/10 expert rating. The model scores 8/10 across Form and function and Technology.

Owners consistently praise its strong performance, roomy interior, and impressive features. The overview also points to a polished cabin and a truck that balances utility with everyday comfort, which fits buyers who want a full-size pickup that feels more refined than purely work-focused. With 29.5% of listings marked as good or great deals, the market gives you some room to shop selectively.

Is the 2015 GMC Sierra 1500 reliable?

Owners rate it 4.2/5, a solid signal of long-term satisfaction. The owner feedback also points to a truck that feels dependable and versatile, with many drivers appreciating it as both a work and family vehicle. The expert notes reinforce that impression by describing a truck with commonsense improvements and a broad range of capability, while the cost-effectiveness notes add that a standard, 2-year scheduled maintenance program covers the truck for up to 24,000 miles.

That said, some owners mention potential mechanical issues, so a careful pre-purchase inspection is still important if you want to reduce long-term ownership risk.

What should I look for when buying a used 2015 GMC Sierra 1500?

At 61.8% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should start with a vehicle history report and then prioritize a hands-on inspection of body panels, alignment, and signs of prior repair. Because this truck is often used for work and towing, it also makes sense to focus on wear items, cabin condition, and how well the truck has been maintained. If a listing looks especially clean, confirm that the condition matches the photos and the paperwork.

Key things to evaluate:

• Trim level: The Sierra comes in one regular cab configuration and two 4-door cab options, with a standard 6-foot-6-inch box, an extended 8-foot box, and a shorter 5-foot-8-inch box on some Crew cabs. The cabin is function-first, with three USB charging stations, multiple power outlets, a large center console, and a spacious back seat, while the Denali adds a more upscale presentation.
• Powertrain: The base 4.3-liter V6 makes 285 hp and 305 lb-ft of torque, and the lineup also includes a 5.3-liter V8 with 355 hp and 383 lb-ft plus a 6.2-liter V8 with 420 hp and 460 lb-ft. The V6 and 5.3-liter use a 6-speed gearbox, while the 6.2-liter gets an 8-speed transmission; the V6 and V8s can shut down cylinders to help save fuel, though the gains are described as minimal.
• Safety package: The available safety systems include lane-departure warning, front-collision alert, active seat rumbling, hands-free Siri integration, and a rear backup camera. These systems are optional rather than universal, so you should confirm whether a specific listing has them.
• Infotainment: The truck includes IntelliLink, which is described as easy to navigate, and the cabin can be fitted with an 8-inch touchscreen. It can also be equipped with a 4G/LTE wireless hotspot with 3GB of free data before payment is required.
• Fuel efficiency: The 4.3-liter V6 with 4WD is rated around 17 mpg city and 22 highway, the 5.3-liter V8 with 4WD is rated 16/22, and the 6.2-liter V8 with 4WD is rated 14/20.

Which 2015 GMC Sierra 1500 trim should I buy?

The 2015 GMC Sierra 1500 is offered in 3 trim levels: Sierra, SLE, SLT.

Here's the short version:

• Sierra: This is the entry point, and it gives you the core Sierra experience with the 4.3-liter V6 and the truck’s practical, business-minded cabin layout. It makes sense if you want the most straightforward path into the model and do not need the extra equipment that comes with the higher trims.
• SLE: This is the best-value trim for many shoppers because it adds access to the more popular 5.3-liter EcoTech V8 while keeping the truck’s useful interior and everyday comfort focus. If you want a stronger balance of capability and equipment without jumping to the top end, this is the trim to target.
• SLT: This trim also offers the 5.3-liter V8 and sits closer to the more upscale side of the lineup, making it a better fit if you want more comfort and a richer feature set. It is the right choice if you want a more polished daily driver and are willing to pay for it.

The safety content notes that several driver-assistance features are optional, so check each listing carefully for equipment.

Is now a good time to buy a used 2015 GMC Sierra 1500?

The market looks moderately favorable if you are a selective buyer.

• Deal availability: 29.5% of listings are priced as good or great deals.
• Inventory: There are 2,038 listings available.
• Price trend: Prices have softened 5.76% compared with last year.
• Clean inventory: 61.8% of listings are accident-free.

If you find a listing below $18,650, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2015 GMC Sierra 1500's resale value?

The current average of $18,660 sits slightly below last year's $19,801.

That softer pricing trend suggests the truck has already absorbed some depreciation, which can help a future seller if the market stabilizes. It also means your resale outcome will depend heavily on condition, mileage, and how well the truck has been maintained. Listings with cleaner histories and stronger equipment should be easier to move later than rougher examples.

Vehicles with solid owner satisfaction ratings, like this model year's 4.2/5, tend to retain buyer demand, which supports resale value over time.

Is the 2015 GMC Sierra 1500 safe?

The 2015 GMC Sierra 1500 earned a Good rating from the Insurance Institute for Highway Safety, including a Good rating in the moderate front overlap crash test, and it earned a five-star overall rating from NHTSA, including five-star ratings for frontal and side crashes and a four-star rollover rating.

It earns a 7/10 safety score from our experts.

The available driver-assistance suite includes lane-departure warning, front-collision alert, and active seat rumbling that vibrates to help alert you when you drift. A rear backup camera is also highlighted as especially useful given the truck’s size. Some of these features are optional, so you should verify the exact safety equipment on any used listing.

Should I buy a 2015 GMC Sierra 1500 or consider a different year?

If you're weighing the 2015 against nearby model years, here's how to think about it:

Choose the 2015 if:

• 29.5% of listings are priced as good or great deals.
• At 61.8% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 5.76% compared with last year.
• Owners rate it 4.2/5 — a solid satisfaction signal.
• It builds on last year’s major redesign with a more functional interior and a polished, comfortable feel.

Consider the 2014 if:

• At $16,383, the 2014 costs less than the current year's $18,660 average.
• It was a redesigned full-size pickup that improved comfort, capability, and refinement.

The bottom line: If you want the better-equipped and more polished version of this generation, the 2015 is the stronger pick. If your priority is saving money and you can live with an older model year, the 2014 is the value-oriented alternative.

How does the 2015 GMC Sierra 1500 compare to the 2015 Chevrolet Silverado 1500?

Our experts score the 2015 GMC Sierra 1500 7.3/10 and the 2015 Chevrolet Silverado 1500 7.5/10. The Sierra is the more expensive truck on average, but it also has a slightly stronger accident-free share and a more polished, comfort-focused presentation. The Silverado undercuts it on average price and has a slightly better deal share, so it may appeal more if you want the lower-cost path into this platform.

These recommendations are based on CarGurus' proprietary market data from November 10, 2026, CarGurus experts' opinions, and generative AI.