Parts & Accessories Spare parts Peace be upon you. For sale: two GMC transmissions, fit 1996 to 2006. The first transmission is 4L80, single, 4-speed, for an 8-bolt GMC. The second transmission is 4L60, single, 4-speed, for a 6-bolt GMC. Price: 2200 without torque converter, and 1800 with torque converter. Both are complete with their torque converters, and both are working and guaranteed.