The automatic transmission was the Allison 1000, which was known for its durability and towing capacity. The manual transmission was a 6-speed unit produced by New Venture Gear (NVG).
To determine which transmission your specific Silverado 3500HD has, you can check:
* The owner's manual: It will list the transmission type.
* The vehicle identification number (VIN): This can be used to look up the specific specifications of your truck.
* The transmission tag: This is usually located on the transmission itself.
Let me know if you need further assistance!
