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New 6spd Tranny Applications

2017HD

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2017HD Enthusiast

2017HD

Posted
Posted

Was scrolling through GM Powertrain tonight and discoverd the 6L80 transmission mated to a Flex Fuel 5.3L in the 2008 Serria. It also appears that the 6L90 is being offered in the 3/4 T Burbs and Yukon XLs. I confirmed this on the Chevy web site. It also looks like the 6L80 is offered in everything that has the 6.2L

 

 

See http://media.gm.com/us/powertrain/en/produ...008/08truck.htm

for more details.

s-ten Enthusiast

s-ten

Posted
Posted

Good eye!

 

This is interesting, personally I think somebody might have goofed with the 5.3 option, but you never know what GM has up their sleeves. The 6-speed was always going to be standard on the 3/4 ton suburbans in '08 and was always mated to the 6.2, no matter what it was in.

cc1999 Enthusiast

cc1999

Posted
Posted

I herd a rummor on GMI a couple weeks ago that there might be a few models still coming in the 08my with the 6 speed auto as a late availabilty option. which modles was still unknown, this might very well be what they were talking about.

svensk Senior Enthusiast

svensk

Posted
Posted

Omg could you imagine how fast a 5.3 with 3.73 gears would be with the 6spd and it's gearing? That would be a quick truck and would steal the Vmax's thunder unless they gave the 6.0L the same option.

omegafiler Senior Enthusiast

omegafiler

Posted
Posted

Chances are they'll give the trucks the 3.42 gears since the tranny is specifically tuned/geared for it. I still want a Denali of some sort, but thats another reason why I'm holding off. Once the rest of the trucks get the 6spd and of course the 6.2l V8, that should hopefully get rid of some of the premium the Denali's currently have. Unless GM decides to do something else to give them an edge. Either way, definately look forward to see what GM does with their entire truck line. Besides, I won't be in the market for a new vehicle until 09 or 10 MY.

2017HD Enthusiast

2017HD

Posted
  • Author
Posted

My 2500HD has 4.10 rear gears and the 6L90 with the 6.0L and it has pleanty of spunk for towing. I would think that a 5.3 and 3.73 or 4.10 would also be a great towing combo with the 6spd. I could not find anything on the dealerworld ordering site - there is a new PowerPackPlus option pack that had the 5.3 the G80 and the Trailer Pkg. There is no mention of the 6spd tranny.

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