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2023 GMC Sierra 3500 HD 2023 AT4 Crew Cab Pickup

Repair services & inexpensive new parts for 2023 GMC Sierra 3500 HD 2023 AT4 Crew Cab Pickup with 6.6L 6571CC 401Cu. In. V8 GAS OHV Naturally Aspirated engine.

Have Questions about GMC Sierra 3500 HD 2023 AT4? Ask the assistant for questions about mileage, performance, repairs, parts, recommended maintenance and more.


Make: GMC
Model: Sierra 3500 HD
Trim: AT4 Crew Cab Pickup 4-Door
Year: 2023

Quick Info

Fuel: GAS
Aspiration: Naturally Aspirated
Engine Displacement: 6.6L
Engine CC: 6571
Engine CID: 401
Engine Block Type: V
Cylinder Type: OHV
Cylinders: 8
Drive: 4WD
Body Type: Crew Cab Pickup
Doors: 4

Repair services & inexpensive new parts for 2023 GMC Sierra 3500 HD 2023 AT4 Crew Cab Pickup with 6.6L 6571CC 401Cu. In. V8 GAS OHV Naturally Aspirated engine.