New 2025 GMC Sierra 3500 Crew Cab Reading SLU108-DW 9' Service Truck
Chassis Details
Vehicle Options
- Convenience Package: Deep-Tinted Glass; Power-Adjustable Black Outside Mirrors; Electric Rear-Window Defogger
- Preferred Equipment Group 1SA: High-Visibility Molded in Black Outside Mirrors; Sierra HD Pro Safety; Solar Absorbing Tinted Glass; Chrome Grille with Flat Black Grille Insert Bars; 170 Amp Alternator
- Power-Adjustable Black Outside Mirrors
- Electric Rear-Window Defogger
- Deep-Tinted Glass
- 120-Volt Instrument Panel Power Outlet (400 Watts)
- Upfitter Switch Kit (5)
- SEO: Rear Camera Kit
- Apple CarPlay/Android Auto smart device wireless mirroring
- Forward Collision Alert with Automatic Braking
- Front Pedestrian Braking
- Wi-Fi Hotspot capable mobile hotspot internet access
- Brake assist system
- Cruise control with steering wheel mounted controls
- OnStar Remote Access (8-years) smart device engine start control
- Primary monitor touchscreen
- Lane Departure Warning
- 17 x 6.5-inch front and dual rear silver steel wheels
- 6.6L V-8 gasoline direct injection
- variable valve control
- regular unleaded
- engine with 401HP
- Teen Driver restricted driving mode
- Auxiliary camera
- Keyfob window control
- Bluetooth wireless audio streaming
- Following Distance Indicator
- Smart key with push button start
- IntelliBeam auto high-beam headlights
- Immobilizer
- Bluetooth handsfree wireless device connectivity
- Trailer brake controller
- Trailer sway control
- GMC Infotainment System external memory control
- Electronic stability control system with anti-roll
- Hill Start Assist (HSA)
- Rear seat check warning
- LED daytime running lights
- Manual rear child safety door locks
- MyGMC Mobile App mobile app access
- Heated driver and passenger side door mirrors
- Auto-dimming driver side mirror
- Auto-dimming passenger side mirror
- Gage cluster display size: 3.50
- Manual tilting steering wheel
- Wheel hub covers
- Manual extendable trailer mirrors
- Upfitter switches
- Dual rear wheels
- LT235/80SR17 AT BSW front and rear tires
- Vinyl front seat upholstery
- 6 airbags
- Driver front impact airbag
- Seat mounted side impact driver airbag
- Curtain first and second-row overhead airbags
- Passenger front impact airbag
- Seat mounted side impact front passenger airbag
- Airbag occupancy sensor
- Auto-locking doors
- Allison 10-speed automatic
- Selectable mode transmission
- View All
Body Details

SL Service Body Features
Reading’s SL service bodies feature the premium materials and quality construction Reading is famous for at an exceptional value. The SL is available in 98" single rear wheel, 108" and 132" dual rear wheel configurations. Both are available in standard and low-profile designs. You can get even more storage space with the Reading Spacemaker® option.
Every SL service truck body moves through our exclusive E-coat primer and powder coat finish process for outstanding rust and corrosion resistance. In addition, the SL service body offers numerous standard features and options, including Dual-Pro® door seals, an Aluma-Fill fuel cup, stainless steel rotary locks, a slam-action tailgate and much more.
Made in America and backed by our 6-year warranty, the SL service body offers unbeatable value.

**With approved credit. Terms may vary. Monthly payments are only estimates derived from the vehicle price with a 72 month term, 4.9% interest and 20% down payment.
***See dealer for details. Tax, tag, title, license and dealer administration fee (unless itemized above) are extra.
While we make every effort to ensure the data listed here is correct, there may be instances where some of the factory rebates, incentives, options or vehicle features may be listed incorrectly as we get data from multiple data sources. PLEASE MAKE SURE to confirm the details of this vehicle (such as what factory rebates you may or may not qualify for) with the dealer to ensure its accuracy. Dealer cannot be held liable for data that is listed incorrectly.
Displayed MPG is based on applicable EPA mileage ratings. Use for comparison purposes only. Your actual mileage will vary, depending on how you drive and maintain your vehicle, driving conditions, battery pack age/condition (hybrid models only) and other factors.
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† Based on 2019 EPA mileage ratings. Use for comparison purposes only. Your actual mileage will vary depending on how you drive and maintain your vehicle.