4x4 to 4x2

[dbunyip]

I have a 4x4 04.5 silverado that I have changed the transfercase in to a non GM one. Is it possible to change the programming to a 4x2 so I don't have the service 4x4 on the dash?

[ScarabEpic22]

I have a 4x4 04.5 silverado that I have changed the transfercase in to a non GM one. Is it possible to change the programming to a 4x2 so I don't have the service 4x4 on the dash?

Hmm intesting, post your tune(s) up. I assume since you mentioned 04.5 that its a LLY Dmax?

Probably need to have a Tech II reflash your BCM, I dont see anything related to 4WD in the LLY ECM or TCM files I have. But then again Ive only played with 1 LLY so Ill let one of the Duramax tuners chime in here.

[minytrker]

I would guess its in the BCM. The 4x4 and 4x2 have the same enigine tune in them.