Good morning, I have a 2005 Suburban Z71 with 202k on the clock. I had to put a rebuilt transfer case in it. The rebuilt case has a Sonnax case save installed to prevent pump rub issues.
I picked up the truck (clean from Texas) weeks back and when I changed all fluids in the truck, the transfer case was about empty. I filled it back up with AutoTrak II, but the case was too far gone -- bearings felt horrible and the seals were leaking most of the fluid out.
Was pretty careful with the encoder motor, however, now when I shift it into 4HI, it blinks 4HI a few times then by default goes to Auto 4WD. I cannot get it into 4HI. It will shift into 4LO no problem, as well as go back into 2WD. I don't ever recall the t-case having to stay in Auto 4WD.
Is the encoder bad? Or possibly the switch? I have heard that I may have to have the Transfer Case control module re-programmed or reset for the new clutch packs in the new t-case. Has anyone heard of this? For reference this is the NP246 case. Is this a common dealer visit item or something I could do from a Tech 2?
Thanks!
I picked up the truck (clean from Texas) weeks back and when I changed all fluids in the truck, the transfer case was about empty. I filled it back up with AutoTrak II, but the case was too far gone -- bearings felt horrible and the seals were leaking most of the fluid out.
Was pretty careful with the encoder motor, however, now when I shift it into 4HI, it blinks 4HI a few times then by default goes to Auto 4WD. I cannot get it into 4HI. It will shift into 4LO no problem, as well as go back into 2WD. I don't ever recall the t-case having to stay in Auto 4WD.
Is the encoder bad? Or possibly the switch? I have heard that I may have to have the Transfer Case control module re-programmed or reset for the new clutch packs in the new t-case. Has anyone heard of this? For reference this is the NP246 case. Is this a common dealer visit item or something I could do from a Tech 2?
Thanks!