6-Speed AT Unit, 4WD for GM 6L90
Transtar Part Number: 104-AAX
This 4WD 6-speed is found in 2011-2013 Chevrolet Silverado and GMC Sierra 2500HD trucks with the 6.0L engine (Part #: 104-AAX). This unit is built with the latest OE updates and is backed by the Transtar Seal of Quality. This unit comes standard with the 18-month/18,000 mile warranty and it is upgradeable to the Premium Warranty (36 months/100,000 miles) or the Ultimate Warranty (36 months/500,000 miles). The engine code in the VIN # (8th digit in the VIN) is a G with popular tag numbers of 1DGA, 2DZA & 3DHA.