Nav Audio, Tranny, and Bed Length questions

[TheGrouch]

I've been looking at the GMT900 Yukon and GMT900 Sierra CC and have a few questions.

 

1) Are the audio systems different between the Nav and non-Nav Bose systems? Obviously the head unit is different, but I'm wondering if the Nav system incorporates a different amp or speakers.

 

2) Anyone heard/read anything that would indicate a six speed auto being available in the Sierra 1/2 Ton?

 

3) Any news about a Standard length bed being available on the Sierra 1/2 Ton Crew?

 

4) Any rumors of a small diesel for the 1/2 Ton lineup?

 

Thanks,

Chris

[HawkeyeOC]

I've been looking at the GMT900 Yukon and GMT900 Sierra CC and have a few questions.

 

1) Are the audio systems different between the Nav and non-Nav Bose systems? Obviously the head unit is different, but I'm wondering if the Nav system incorporates a different amp or speakers.

 

Not sure, but I doubt they are different

 

2) Anyone heard/read anything that would indicate a six speed auto being available in the Sierra 1/2 Ton?

 

For '08 or '09 it will probably be available

 

3) Any news about a Standard length bed being available on the Sierra 1/2 Ton Crew?

 

So far no news here

 

4) Any rumors of a small diesel for the 1/2 Ton lineup?

 

There will be a small diesel but again it's easily a year or probably more off in the future