Reply to thread

Message: <blockquote data-quote="idatahoe" data-source="post: 27823" data-attributes="member: 15122">Hi everyone,I'll start in the past, before the question of the present.2001 Tahoe, 4x4, 5.3. 181k miles or so. Visually good condition, inside and out.A few weeks ago, I was coasting down a hill in neutral. Came up to the top of the hill, and tried to switch into drive at around 30 or 35mph. Accidentally put it into reverse, which immediately stalled the motor, so I put it back in neutral and coasted to a shop. Very stupid mistake! I'm used to transmissions that block you out of reverse.Yesterday, my wife tried to drive it up our driveway with a good bit of snow on the ground. Transfer case had been working quite well, in auto mode, 4WD high, and 2WD (we've had the Tahoe for about a month and haven't tested everything yet.) 4WD lights were not working when she started it. She easily made it up to the (fairly long) driveway and lost power about 20 feet from the road. She tried to get 4WD to engage, but no lights on the buttons, and eventually a "service 4WD" message popped up. She said there was some grinding when shifting (it has always shifted perfectly.)I made it back home, started it, and found absolutely no wheel spin. Shifted fine, but no output in any gear, forward, or reverse. Could not shift the transfercase. Had some grinding going into park.I initially assumed that the 4L60 was blown, but one shop I talked to said that the output shaft must be spinning for parking to grind. Now I'm not so sure.Some possibilities that come to mind:4x4 is unrelated and differential blew.Transmission is blown.Transfer case is blown or in neutral.Obviously, I need to check if the driveshaft(s) are turning, but I figured I'd start this thread and see if anyone can offer any insights.Thank you!</blockquote>