The VSS (Vehicle Speed Sensor) is usually found on the tail end of the transmission.
It will as long as the 98 truck is a 4-wheel drive too. 4-wheel drive and 2-wheel drive transmissions are DIFFERENT and will NOT INTERCHANGE.
The 2013 RAM 1500 has rear wheel drive.
The 2012 RAM 1500 has rear wheel drive.
The 2011 RAM 1500 has rear wheel drive.
The 2014 RAM 1500 has rear wheel drive.
The 2001 GMC Sierra-1500 has rear wheel drive.
The 2007 Chevrolet Silverado-1500 has rear wheel drive.
The 2013 GMC Sierra-1500 has rear wheel drive.
The 2008 Chevrolet Silverado-1500 has rear wheel drive.
The 2003 GMC Sierra-1500 has rear wheel drive.
The 2006 Chevrolet Silverado-1500 has rear wheel drive.
The 2014 Chevrolet Silverado-1500 has rear wheel drive.