The 2024 GMC Sierra HD receives a mid-cycle refresh for the fifth model year of the fourth generation heavy duty pickup truck.
These changes follow the 2020 Sierra HD, which received a complete overhaul (redesign and re-engineering), followed by a few small changes and updates to the 2021 Sierra HD, 2022 Sierra HDÂ and the 2023 Sierra HD.
Model Line
Addition of AT4X trim (5SB)
- Content / features
- Standard 6.6L Gas Engine (L8T)
- Available Duramax 6.6L Turbo-Diesel Engine (L5P)
- Factory-Installed 1.5 Inch Suspension Lift (ZRX)
- Multimatic DSSV Dampers (ZRX)
- 18 Inch machined aluminum wheels with High Gloss black accents (RCS)
- 35 Inch Goodyear Territory MT Tires (QMG)
- Red Recovery hooks (UGA)
- Rear E-Locking Differential
- Adaptive Cruise Control (KSG)
- AEV Edition Package (ULV)
- Includes:
- Front AEV Stamped Steel bumpers with heavy duty cast recovery points (VHU)
- Rear AEV Stamped Steel bumpers with heavy duty cast recovery points (VQH)
- Gloss-black door handles and black tailgate accent
- 18 Inch AEV Salta Black Gloss Aluminum Wheels (RBJ)
- 18 Inch spare wheel (QNB)
- Stamped steel front approach skid plate (PZG)
- Stamped steel steering gear skid plate (PZZ)
- Stamped steel transfer case skid plate (PZN)
- AEV Embroidered Headrest front only
- AEV Branded Floor liners (AAO)
- Bose Premium Series with 12-speaker system with CenterPoint, Richbass woofer and AudioPilot (UQS)
- 3 Years of OnStar Premium Plan (R9M)
Addition of Denali Ultimate trim (5SB)
- Content / features
- Duramax 6.6L Turbo-Diesel Engine (L5P)
- 220 Amp alternator (KW5)
- Exhaust brake (K40)
- Engine block heater (K05)
- 3.42 Ratio Rear Axle (GU6)
- 10-speed automatic Transmission (MGM)
- Signature Denali grille in Vadar chrome
- Winter Grille Cover (BHP)
- Alpine Umber interior (H40)
- Sierra HD Pro Safety Package (PDI)
- Technology Package (CWM)
- Includes:
- Rear Camera Mirror (DRZ)
- Multicolor 15 inch Diagonal Head-Up Display (UV6)
- Adaptive Cruise Control (KSG)
- Bose Premium Series with 12-speaker system (UQS)
- Power-retractable Assist steps with LED perimeter lighting and bright accent (BRS)
- 16-way power seat adjuster including lumbar and massage (A2X)
- Recovery hooks (VLQ)
- 20-inch Ultra-bright machined aluminum wheels with gloss black inserts with Black painted pockets (Q7H)
- 3 Years of OnStar Premium Plan (R9M)
Exterior
- Addition of Animated LED Headlamps (T4L)
- Standard on all trim levels
- Addition of Animated LED Tail lamps
- Standard and only available on SLT, AT4, AT4X, Denali, and Denali Ultimate
- Addition of six new wheel options
- 20-inch Ultra-bright machined aluminum wheels with gloss black inserts (Q7H)
- Standard on Denali Ultimate trim with single rear wheels
- 20-inch High gloss black aluminum wheels (Q7N)
- Only available on AT4 trim
- 20-inch Ultra-bright machined wheels with bright chrome inserts (Q7F)
- Standard on Denali trim with single rear wheels
- 18-inch polished forged aluminum wheels (Q21)
- Available on SLT trim and standard on Denali and Denali Ultimate trims with dual rear wheels
- 22-inch High gloss black aluminum wheels with machined accents (LPO SAK)
- 22-inch Gloss black aluminum wheels (LPO SBL)
- 20-inch Ultra-bright machined aluminum wheels with gloss black inserts (Q7H)
- Addition of seven new exterior colors:
- Titanium Rush Metallic (G6M)
- Not available on Pro 1SA
- Sterling Metallic (GXD)
- Volcanic Red Tintcoat (GNT)
- Not available on Pro 1SA and Denali Ultimate
- Redwood Metallic (G48)
- Not available on Pro 1SA, AT4, AT4X or Denali Trim
- Downpour Metallic (GXP)
- Not available on AT4 or AT4X Trim
- Titanium Rush Metallic (G6M)
- Not available on Pro 1SA
- Thunderstorm Gray (GNO)
- Not available on Denali or Denali Ultimate
- Titanium Rush Metallic (G6M)

Titanium Rush Metallic G6M

Sterling Metallic GXD

Volcanic Red Tintcoat GNT

Redwood Metallic G48

Downpour Metallic GXP

Titanium Rush Metallic G6M

Thunderstorm Gray GNO
- Addition of Rainsense Wipers (CE1)
- Standard on SLT, AT4, AT4X, Denali, and Denali Ultimate trims
- Not available on Pro and SLE
Interior
- All new redesigned interior
- Content / features
- 16-way power driver (A2X) and front passenger (A7K) seats with power lumbar and massage.
- Standard only on AT4X and Denali Ultimate
- 13.4 inch diagonal Premium GMC Infotainment System with Google built-in compatibility (IOK)
- 12.3 inch diagonal digital multicolor Driver Information Center (UDV)
- 16-way power driver (A2X) and front passenger (A7K) seats with power lumbar and massage.
- Content / features
Mechanical
- 6.6L Duramax Turbo-Diesel L5PÂ updated to 470 horsepower and 975 pound-feet of torque
Driver Assist Technology
- Addition of Trailer Side Blind Zone Alert (UKV)
- Addition of Front Pedestrian Braking (UKJ)
- Addition of Buckle to Drive (T8Z)
Packages
- Addition of Denali Reserve Package (PEC)
- Combines Technology Package (CWM) and power sunroof (CF5)
- Addition of Max Trailering Package (NHT) for 2500 models
- Content / features
- 3500 HD Frame
- 3500 HD Leaf Springs
- 12 inch Rear axle
- 3500 HD Shock Package
- Gooseneck / 5th Wheel Prep provisions with bed stamped holes and caps (Z6A)
- Not available on AT4X trim
- Content / features
- Availability
- Sierra HD Pro Safety Package (PDI) is now standard on all trims
- Includes
- Forward Collision Alert (UEU)
- Following Distance Indicator (UE4)
- Front Pedestrian Braking (UKJ)
- IntelliBeam (TQ5)
- Lane Departure Warning (UFL)
- Buckle to Drive (T8Z)
- Automatic Emergency Braking (UHY)
- For the 2023 model year, this was referred to as Driver Alert Package II (PDJ) and was not available on Pro
- Includes
- Pro Safety Plus Package (PQA) is available on Pro trim
- Sierra HD Pro Safety Plus Package (PED) is available on SLE, SLT, AT4, AT4X, and Denali
- Sierra HD Pro Safety Package (PDI) is now standard on all trims
The updates and changes described here are specific to the U.S. market and may be different for other markets.
Discussion
Discuss the 2024 GMC Sierra HD in our GMC forum.
Sierra HD News
GMC Sierra HD Deals In February 2025: Long-Term Financing
Plus, local market leases on heavy-duty pickup truck.
Read More »This 2025 GMC Sierra HD Pro Wheel Is Currently Unavailable To Order
Buyers will need to select an optional wheel instead.
Read More »