2026 GMC Sierra AT4X
GMC Sierra Details
V8, 6.6L
COASTAL DUNE
4WD
Diesel
0 Miles
226487
1GT4UZEY6TF226487
2500
AT4X
Estimated Payment
$0 / month
About This 2026 GMC Sierra
2026 GMC Sierra 2500 AT4X 4WD — V8 6.6L Diesel — Sidney, MT — Best Price
Discover the power and capability of this 2026 GMC Sierra 2500 AT4X, now available in Sidney, MT. Equipped with a robust V8 6.6L diesel engine and full-time 4WD, this heavy-duty pickup delivers exceptional towing capacity, confident off-road performance, and impressive torque for demanding work or weekend adventures. The AT4X trim adds rugged suspension, off-road-tuned components, and premium comfort features for a balanced blend of capability and refinement.
Key features:
- V8 6.6L turbo diesel for maximum torque and towing
- 4WD with enhanced off-road traction and stability
- AT4X off-road package: upgraded shocks, skid plates, and all-terrain tires
- Spacious, tech-forward cabin with premium materials and driver-assist systems
- Advanced towing technology: integrated trailer brake controller and trailer sway control
Located in Sidney, MT, this 2026 GMC Sierra 2500 AT4X is competitively priced and advertised as the best price available — an exceptional value for buyers seeking power, durability, and comfort. Contact our Sidney showroom to schedule a test drive or request more details about this heavy-duty GMC pickup. Act now to secure this powerful 4WD diesel truck at the best price in the region.
Discover the power and capability of this 2026 GMC Sierra 2500 AT4X, now available in Sidney, MT. Equipped with a robust V8 6.6L diesel engine and full-time 4WD, this heavy-duty pickup delivers exceptional towing capacity, confident off-road performance, and impressive torque for demanding work or weekend adventures. The AT4X trim adds rugged suspension, off-road-tuned components, and premium comfort features for a balanced blend of capability and refinement.
Key features:
- V8 6.6L turbo diesel for maximum torque and towing
- 4WD with enhanced off-road traction and stability
- AT4X off-road package: upgraded shocks, skid plates, and all-terrain tires
- Spacious, tech-forward cabin with premium materials and driver-assist systems
- Advanced towing technology: integrated trailer brake controller and trailer sway control
Located in Sidney, MT, this 2026 GMC Sierra 2500 AT4X is competitively priced and advertised as the best price available — an exceptional value for buyers seeking power, durability, and comfort. Contact our Sidney showroom to schedule a test drive or request more details about this heavy-duty GMC pickup. Act now to secure this powerful 4WD diesel truck at the best price in the region.








