Used 2019 GMC Sierra 3500HD for Sale nearAustin, TX
Shop with transparent pricing.
Only show listings that include dealer fees- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 360 hp 6L V8 Flex Fuel Vehicle
- Exterior color:
- White
- Fuel type:
- Flex Fuel Vehicle
- Interior color:
- Gray
- Transmission:
- Automatic
- Mileage:
- 51,112
- Stock #:
- PF261916
- VIN:
- 1GT42TCG8KF261916

Sponsored Listing
2019 GMC Sierra 3500HD
Crew Cab 4WD
51,112 mi
$36,129
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- White Frost Tricoat
- Fuel type:
- Biodiesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 226,000
- Stock #:
- D12781
- VIN:
- 1GT42YEY8JF183087

Sponsored Listing
2018 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
226,000 mi
$31,520
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- White Frost Tricoat
- Fuel type:
- Biodiesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 226,000
- Stock #:
- D12781
- VIN:
- 1GT42YEY8JF183087

2018 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
226,000 mi
$31,520
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Black
- Fuel type:
- Biodiesel
- Interior color:
- Black
- Mileage:
- 66,987
- Stock #:
- PP9589
- VIN:
- 1GT42YEY6JF239589

2018 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
66,987 mi
$54,476
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 360 hp 6L V8 Flex Fuel Vehicle
- Exterior color:
- White
- Fuel type:
- Flex Fuel Vehicle
- Interior color:
- Gray
- Transmission:
- Automatic
- Mileage:
- 51,112
- Stock #:
- PF261916
- VIN:
- 1GT42TCG8KF261916

2019 GMC Sierra 3500HD
Crew Cab 4WD
51,112 mi
$36,129
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Quicksilver Metallic
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 154,888
- Stock #:
- P1840A
- VIN:
- 1GT42YEY1JF124012

2018 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
154,888 mi
$36,265
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Black
- Fuel type:
- Biodiesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 115,930
- Stock #:
- 243785
- VIN:
- 1GT49WEY0LF243785

2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
115,930 mi
$51,913
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Onyx Black
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 159,945
- Stock #:
- 7314A
- VIN:
- 1GT42YEY1JF134748

2018 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
159,945 mi
$39,480
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 401 hp 6.6L V8
- Exterior color:
- Onyx Black
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 10-Speed Automatic
- Mileage:
- 69,124
- Stock #:
- KM225496
- VIN:
- 1GT49TE75LF225496

2020 GMC Sierra 3500HD
SLE Crew Cab LB 4WD
69,124 mi
$42,626
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Summit White
- Fuel type:
- Biodiesel
- Interior color:
- Dark Walnut/Slate
- Transmission:
- Automatic
- Mileage:
- 48,464
- Stock #:
- A18019D
- VIN:
- 1GT49WEY0LF324432

2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
48,464 mi
$60,135
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 401 hp 6.6L V8
- Exterior color:
- Silver
- Fuel type:
- Gasoline
- Interior color:
- Brown (Beige)
- Transmission:
- 6-Speed Automatic Overdrive
- Mileage:
- 131,487
- Stock #:
- 2455
- VIN:
- 1GT49UE73LF167491

2020 GMC Sierra 3500HD
SLT Crew Cab 4WD
131,487 mi
$36,022
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- White Frost Tricoat
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 121,737
- Stock #:
- H261588A
- VIN:
- 1GT49WEY2LF131540

2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
121,737 mi
$45,326
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Quicksilver Metallic
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 112,941
- Stock #:
- PX077563A
- VIN:
- 1GT49WEY0LF152953

2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
112,941 mi
$47,406
CarGurus Analysis:
2019 GMC Sierra 3500HD
With 69 currently listed for sale near Austin, TX and an average price of $36,999.00, 23.2% of 2019 GMC Sierras 3500HD for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2019 GMC Sierra 3500HD 5 / 5 stars.
65.2% of 2019 Sierra 3500HD models on CarGurus are accident free.
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Onyx Black
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 72,476
- Stock #:
- 23002
- VIN:
- 1GT42YEY2JF290426

2018 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
72,476 mi
$51,433
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- White
- Fuel type:
- Biodiesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 120,050
- Stock #:
- 292410
- VIN:
- 1GT49WEY4LF292410

2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
120,050 mi
$49,513
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- White
- Fuel type:
- Biodiesel
- Transmission:
- 6-Speed Automatic Overdrive
- Mileage:
- 110,556
- Stock #:
- 13787
- VIN:
- 1GT42TCY2KF236082

2019 GMC Sierra 3500HD
Crew Cab 4WD
110,556 mi
$35,273
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Gray (Dark Sky Metallic)
- Fuel type:
- Biodiesel
- Interior color:
- Gray (Dark Walnut/Dark Ash Grey)
- Transmission:
- Automatic
- Mileage:
- 149,848
- Stock #:
- 170918
- VIN:
- 1GT49WEY0LF170918

2020 GMC Sierra 3500HD
Denali Crew Cab 4WD
149,848 mi
$46,430
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- White
- Fuel type:
- Biodiesel
- Interior color:
- Gray
- Transmission:
- 6-Speed Automatic Overdrive
- Mileage:
- 125,400
- Stock #:
- 194344
- VIN:
- 1GT42TCY3KF194344

2019 GMC Sierra 3500HD
Crew Cab 4WD
125,400 mi
$31,513
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Onyx Black
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 114,218
- Stock #:
- 114219
- VIN:
- 1GT42YEY1JF129498

-$1,000
2018 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
114,218 mi
$42,593
$41,593
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Quicksilver Metallic
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 215,788
- VIN:
- 1GT42YEY5JF188585

-$1,000
2018 GMC Sierra 3500HD
Denali Crew Cab SB 4WD
215,788 mi
$30,860
$29,860
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Red Quartz Tintcoat
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 189,346
- Stock #:
- 145424
- VIN:
- 1GT49UEY9LF145424

2020 GMC Sierra 3500HD
SLT Crew Cab 4WD
189,346 mi
$35,385
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- White Frost Tricoat
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 47,919
- Stock #:
- 2474
- VIN:
- 1GT42YEY0JF198103

2018 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
47,919 mi
$57,382
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 3500HD
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 6.6L V8 Biodiesel
- Exterior color:
- Dark Slate Metallic
- Fuel type:
- Biodiesel
- Interior color:
- Jet Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 143,788
- Stock #:
- 1GT5796
- VIN:
- 1GT42WEY9KF135796

2019 GMC Sierra 3500HD
Denali Crew Cab LB DRW 4WD
143,788 mi
$43,041
CarGurus Analysis: 2019 GMC Sierra 3500HD

Summary
With 69 currently listed for sale near Austin, TX and an average price of $36,999.00, 23.2% of 2019 GMC Sierras 3500HD for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2019 GMC Sierra 3500HD 5 / 5 stars.
65.2% of 2019 Sierra 3500HD models on CarGurus are accident free.
Why it stands out
The 2019 GMC Sierra 3500HD stands out as a heavy-duty truck that still leaned hard into work-truck capability while offering enough refinement to appeal to buyers who wanted more than just brute strength. In the fourth-generation buying guide, it is described as a truck with a completely new style, a revamped interior, and a more luxurious Denali trim than before. It also offered a wide range of cab, bed, axle, and trim combinations, which made it easy to tailor the truck to different towing and hauling needs.
For 2019 specifically, the guide does not list a unique equipment change for that model year, but it does note that the generation’s production run ended with a number of recalls still affecting some trucks, including issues that persisted into the final production year. That matters because it helps explain the truck’s mixed reputation: it had serious capability and a more upscale cabin than earlier versions, but it also carried more recall baggage than some shoppers may want in a used heavy-duty pickup. Even so, the Sierra 3500HD’s appeal remained clear for buyers who valued strong towing, hauling, and the availability of higher-end trim features in a truck built to work.
Other model years to consider
- Average price: $73,476.00
- Good/great deal percentage: 24.3%
- User rating: 5 / 5
- Total listings: 185
- Average price: $76,959.00
- Good/great deal percentage: 17.3%
- User rating: 5 / 5
- Total listings: 208
- Average price: $61,991.00
- Good/great deal percentage: 25.5%
- Total listings: 165
This analysis is based on CarGurus' proprietary market data from August 18, 2026, CarGurus experts' opinions, and generative AI.
5.0 Overall rating
Filter by rating
Anonymous
Reviewed a 2019 GMC Sierra 3500HD on Jan 25, 2022
Love my new truck. Rides wonderfully and plenty of power to haul my 5th wheel.
Anonymous
Reviewed a 2019 GMC Sierra 3500HD on Feb 3, 2022
The 2019 GMC Sierra 3500 is a top-of-the-line value, fully loaded, with all of the nicest features. It’s nicer than the Chevrolet Silverado, and much nicer than the dodge ram
2019 GMC Sierra 3500HD Trims
| Trim type | MSRP |
|---|---|
| Denali Crew Cab 4WD | $59,900 |
| Base Crew Cab LB DRW 4WD | $44,500 |
| Denali Crew Cab LB 4WD | $60,100 |
| SLE Crew Cab 4WD | $49,600 |
| SLT Crew Cab 4WD | $54,700 |
| Crew Cab 4WD | $43,800 |
| Denali Crew Cab LB DRW 4WD | $59,500 |
2019 GMC Sierra 3500HD Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2019 GMC Sierra 3500HD prices has changed over time.
See more price trends2019 GMC Sierra 3500HD Pricing Analysis: Austin, TX Market Report
Pricing by Nearby Locations
Market Area: Austin, TX
Key Insights
- Price Consistency in Nearby Cities: Both New Braunfels and San Antonio have the same average price of $35,405, indicating a stable market in these areas.
- Higher Prices in Katy: The average price in Katy ($37,924) is the highest among the nearby cities, suggesting a premium market or higher demand.
- Lowest Prices in New Braunfels and San Antonio: Both cities offer the lowest average price, which may reflect higher inventory levels or less demand compared to Katy.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Katy, TX | 64 | $37,924 |
| Huntsville, TX | 63 | $36,775 |
| Conroe, TX | 66 | $37,924 |
| New Braunfels, TX | 61 | $35,405 |
| San Antonio, TX | 61 | $35,405 |
Pricing Analysis by Model Year
Key Insights
- Significant Premium for New Models: The 2026 GMC Sierra 3500HD is priced at $122,990, reflecting a substantial markup compared to its MSRP of $48,200, indicating high demand for the latest model.
- Depreciation Trends: Older models, such as the 2018 GMC Sierra 3500HD, show a significant depreciation, with an average price of $26,638, down ~26.5% from its original MSRP.
- Best Value in Recent Models: The 2023 GMC Sierra 3500HD is priced at $53,495, which is only ~23.5% below its MSRP, suggesting it offers a good balance of value and features for buyers.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2026 | $48,200 | $122,990 | +155.5% |
| 2025 | $47,500 | $76,959 | +61.9% |
| 2024 | $46,600 | $73,896 | +58.6% |
| 2023 | $43,400 | $53,495 | +23.5% |
| 2022 | $41,400 | $60,975 | +47.0% |
| 2018 | $36,100 | $26,638 | -26.5% |
| 2015 | $34,295 | $45,990 | +34.1% |
| 2014 | $32,805 | $35,990 | +9.0% |
These recommendations are based on CarGurus' proprietary market data from August 20, 2026, CarGurus experts' opinions, and generative AI.
How much does the 2019 GMC Sierra 3500HD cost?
| Metric | Value |
|---|---|
| Current Average Price | $42,219 |
| Year-Round Low | $41,942.94 |
| Year-Round High | $47,207.17 |
| Average Price a Year Ago | $47,125 |
| Change vs. Last Year | −10.41% |
Prices have softened 10.41% compared to this time last year, making it a favorable time to shop this model year.
There are 361 listings available, which gives you a meaningful amount of inventory to compare.
If you find a listing below $41,942.94, that's toward the low end of the year-round range and worth acting on quickly.
Is the 2019 GMC Sierra 3500HD a good car?
Yes — the 5/5 user rating points to strong owner satisfaction for this model year.
The overview describes it as a heavy-duty truck that still leans into work-truck capability while offering enough refinement to appeal to buyers who want more than brute strength. It also highlights a revamped interior, a more luxurious Denali trim, and a wide range of cab, bed, axle, and trim combinations, which makes it easier to match the truck to your towing and hauling needs.
That combination of capability and flexibility makes it a strong fit if you want a truck built for serious work but still want some comfort and trim variety. 28.3% of listings are priced as good or great deals, which gives you some room to shop selectively.
Is the 2019 GMC Sierra 3500HD reliable?
Owners rate it 5/5, a strong signal of long-term satisfaction.
The overview also notes that the generation ended with a number of recalls still affecting some trucks, including issues that persisted into the final production year. That means you should treat a used purchase as something to verify carefully rather than assume every example has the same history.
For used buyers, the main long-term ownership risk is ending up with a truck that has unresolved recall-related or maintenance issues, so a clean service history matters.
What should I look for when buying a used 2019 GMC Sierra 3500HD?
At 68.1% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
You should run a vehicle history report before you commit, then prioritize a pre-purchase inspection so you can catch signs of prior damage, repair quality issues, or heavy-use wear. Focus especially on overall condition, since a heavy-duty truck can hide hard use even when it looks presentable in photos.
Is now a good time to buy a used 2019 GMC Sierra 3500HD?
This looks like a moderate, selective buyer's market, so you can shop with some leverage if you compare listings carefully.
- Deal availability: 28.3% of listings are priced as good or great deals.
- Inventory: There are 361 listings available.
- Price trend: Prices have softened 10.41% compared with last year.
- Clean inventory: 68.1% of listings are accident-free.
If you find a listing below $41,942.94, that's toward the low end of the year-round range and worth acting on quickly.
What is the 2019 GMC Sierra 3500HD's resale value?
The current average of $42,219 sits slightly below last year's $47,125.
That price movement suggests the market has already adjusted downward, which can help you buy at a more favorable entry point today. For a future seller, that also means resale performance will depend heavily on condition, mileage, and how well the truck has been maintained.
Because heavy-duty trucks often attract buyers who need specific capability, a well-kept example can still hold appeal when it comes time to sell. Vehicles with strong owner satisfaction ratings, like this model year's 5/5, tend to retain buyer demand, which supports resale value over time.
Should I buy a 2019 GMC Sierra 3500HD or consider a different year?
If you're weighing the 2019 against nearby model years, here's how to think about it:
Choose the 2019 if:
- 28.3% of listings are priced as good or great deals.
- At 68.1% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
- Price trend: Prices have softened 10.41% compared with last year.
- Owners rate it 5/5 — a strong satisfaction signal.
The bottom line: If you want a heavy-duty truck with strong capability, a more refined cabin, and a market that has softened enough to create some buying opportunities, the 2019 is the primary path to consider. If you're especially price-sensitive, you can also use the current inventory and deal share to compare nearby years and focus on whichever one gives you the cleanest history and best condition for the money.
These recommendations are based on CarGurus' proprietary market data from August 21, 2026, CarGurus experts' opinions, and generative AI.
Relevant articles

The Best Dually Trucks of 2026
Trucks have gone quite lux lately, and are more often used to get around town than to get work done. The most capable of these trucks are nicknamed “duallies”, which those equipped with dual rear wheels.

GMC Sierra 3500HD Buying Guide: Cost, Reliability, and the Best Years to Buy
Discover the ultimate buying guide for purchasing a used GMC Sierra 3500HD covering each generation since 1988. Whether you're a first-time buyer or a GMC enthusiast, this comprehensive overview will help you research your next pre-owned GMC Sierra 3500HD.

2025 GMC Sierra 3500HD Pricing, Specs, and Release Date
Like its slightly less beefy 2500HD sibling, the 2025 GMC Sierra 3500HD offers added features for the new model year, including a standard trailer brake controller.