What's the 2006 Chevy 2500hd transmission fluid capacity?

The 2006 Chevy 2500HD uses the Devron ViAutomatic transmission fluid and has a capacity of 12.7 US quarts for total capacity and 7.4 quarts for the service refill. If You have a manual transmission the capacity will be 5.8 quarts. To maintain the transmission running at full output, automatic transmission fluid and filter should be serviced and flushed every 60,000 miles. You will get it serviced every 45,000 miles if You are towing a heavy load like a trailer fairly regularly with the truck. This is vital because it helps You to avoid any gear slippage or other problems that can cause serious transmission damage. d***y transmission fluid does not allow the tranny gears to be well lubricated, which will enable the gears to grind metal to metal and You will have metal parts and debris within the fluid from the grinding, which will cause further problems.