Quote:
Originally Posted by MDSheds_SS
6.0 are backed with a 4L80 or 4L60? I want the truck downshift in tow/haul like my 6.2 did. Saves the brakes and makes going down hills that much easier. I know the Allison trans does down shift on decel.
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If 2008+ the 2500 comes with a 6L90E. If 2007 and below has a 4L80E, IIRC.
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1999 Z28 Convertible. 6 speed swap, wide cowl hood, full hockey stripes, and a whining 10 bolt.
2008 Sierra Vortec Max. 6.2 swapped, headers, Magnaflow catback, GMPP CAI, NHT optioned tow package.
2006 GTO, 11.48 @ 118.3
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