glovebox doesnt say GT4....i was sure when i bought the truck that 3.73's came with the HD trailering or All Terrain Offroad package but i dont see the GT4 code there...that was one of the reasons i bought it. WTF

 

I see you have a BBtune.
Ask Justin whatit says.
Or list all the "G" codes. GU6 is 3.42s i believe?

 

yeah it says gu6

 

Z85 trailering hardware notwithstanding, GU6 = 3.42 :(

 

scroll to bottom


http://http://www.drivetrain.com/par...chevrolet.html

 

3.42's? No need to swap in different gears when you can just turbo the truck and be satisfied with the gears.

 

yup Tellem CC05

 

Max trailer package trucks only have 3.73's. Being you are an All Terrain ( can't combine the All Terrain with the Max Trailer ) you have 3.42's regardless.

 

imo 3.42's is great with the 6 speed trans.... i love it..

 

I really wanted a body color All Terrain truck w/ 20's, but you couldn't get that with 3.73. The ONLY reason why I accepted 17" wheels was to get the gears.