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2001 GMC Sierra 2500HD – Allison Transmission – Fully Refreshed Powertrain & Upgrades

This 2001 GMC Sierra 2500HD is a solid heavy-duty pickup that has been extensively updated and maintained. Equipped with the highly desirable Allison automatic transmission, this truck combines proven durability with a long list of recent upgrades that make it ready for work, towing, or daily driving.

The engine has been completely replaced, providing dependable performance and peace of mind for the next owner. The entire A/C and cooling system has also been renewed, helping ensure reliable operation and comfortable cabin temperatures in all seasons.

Additional upgrades include premium Rancho RS9000 adjustable shocks for improved ride quality and handling, along with new headlight housings featuring Daytime Running Lights (DRL) for enhanced visibility and a modern appearance.

Inside, the factory audio system has been upgraded with four DS18 Red Cone speakers installed in the OEM door locations, delivering improved sound quality while maintaining a clean, factory-style look.

• New A/C system

• New cooling system components

• Rancho RS9000 adjustable shocks

• New headlight housings with DRL

• Four DS18 Red Cone speakers in OEM door locations

  This Sierra 2500HD offers the legendary capability GMC trucks are known for, backed by significant recent investment in major mechanical systems. A great opportunity to own a dependable heavy-duty truck with many of the expensive updates already completed.