I'm assuming you mean "vocational" trucks. They can be either manual or automatic... some applications more or less demand an automatic for all the stop-and-go driving they do, such as garbage trucks. Others, the owner will weigh the pros and cons of each, and decide what they think is best.In these applications, they'll typically use the Allison transmissions, which are true automatics, rather than the autoshift transmissions used in OTR trucks.
A518
4L60 is the most common automatic transmission in GMC trucks
Probably need to rebuild the transmission.
i need an answer
The 7.3 PS had 250hp for the trucks with an automatic transmission from 1999-2003; in 2001 the power was increased to 275hp for the trucks with a manual transmission.
Whatever the customer orders them to be. Most I've seen use an Allison automatic, but I've seen them with 8LLs and 10 speeds, as well.
The new Dodge Ram trucks with the eight speed transmission do not have any other option besides the rotary dial.
Yes, of course. Four-wheel-drive has been in trucks since the very first truck was built. The automatic transmission was invented in 1934 by automaker Reo.
Yes, automatic transmissions are available for them. In the US, the Eaton SmartShift, Eaton AutoShift (which still uses a clutch), and Meritor transmissions are the most common, with the Allison six speed being common for vocational trucks, and the Volvo I-Shift being recently introduced to the N. American market. In the UK/EU and elsewhere in the world, most truck manufacturers have a proprietary automatic transmission they offer.
All straight trucks are Automatic
Ford typically used the C6 For all 3/4 ton trucks.
I don't know about all of them, but US Xpress Enterprises and PAM Transport have been the "traditional" users of autoshift trucks. Maverick and USA Truck have added some automatic trucks to their fleets.