1st year for the 6 liter and 6 speed for a 2500 chev
Neighbor feels he has a 5 speed in his 2001 GMC 2500. I don't feel it does but I forgot when the 6 speed auto arrived for the 6 L gas engine. Not for 2001 but it was later?? chevman
Forum Discussion
larry barnhart wrote:
Neighbor feels he has a 5 speed in his 2001 GMC 2500. I don't feel it does but I forgot when the 6 speed auto arrived for the 6 L gas engine. Not for 2001 but it was later??
chevman
It is a 4 speed. I think it was 07 or 08.
Is here sure it isn't an 8.1? That had the 5 speed Allison.
