NakedByNoon

hello ,
I'm new to the forum and I'm having issues with my burb .

1: I just replaced the transmission from a 1998 due to the other one failing and now my speedo reads what would be 120 and my 4x4 does not engage
2: the ac in the front us warm and the ac in the rear is ice cold
3 : intermittent e brake light and solid abs light .
the truck is an 01 burb 2500 with an 8.1 and a 4l80e as well as a black bear tune. Any help would be greatly appreciated

Scotiapilot

Speedo gear needs to be changed or reprogrammed. I think its likely 4x4 wont engage until that's fixed.
Sounds like internal mixer problem, look up cure here.

NakedByNoon

do you think that will also fix the cruise control ?

Scotiapilot

Yes, it is speed sensitive

NakedByNoon

so an update i tested my 4 low and 4 Hi work and my speedo works while in 4wd, its just auto 4wd that does not work and my speedo does not work in 2wd