05tahoe556
New Member
- Joined
- Apr 17, 2014
- Messages
- 5
- Reaction score
- 0
So I just picked up this 2005 Tahoe lt 4x4 a few weeks ago. Everything seemed good with it on the test drive. I put it in 4 high and it engaged in and out no problem and no service lights on. I didn't even think to check low if it went in high no problem. So fast forward to 3 days ago. I tried to use 4 low when pulling my buddies truck out and it would just flash for a bit then just go back to high. Tried in nutrual stopped ,slow roll, and with engine off. You could hear it and fell the truck bump a few times as it tried to. It didn't show service 4wd lights or anything just wont complete the shift. Tried fresh t case fluid with the gm auto track II still nothing. Cleaned the ground conections under the truck they are good. Even tried to reset the computer by unhooking the battery. Nothing has worked. The t case isn't making any funny noises or having any issues with auto 2 hi or 4 hi. What do yall think it could be?