Transfer Case problems of the 2005 Chevrolet Silverado 1500

The transfer case module is not working in this truck I changed the buttons unit but still the same problem and the power goes out in the middle of my diving. Several mechanics change some parts but still the same. I can won;t be able to get out in a situation where I need the 4x4 the dash doesn't show the correct information, only the fuel and rpm.

This vehicle is 4wd. While traveling at highway speed, the electric shift transfer case shifted into neutral without warning.

There is a bad seal where the right front axle connects to the shaft from the transfer case. This is a common part that happens to large number of vehicles.

My 2005 silverado z71 has a loud grinding noise coming from the front differential when it is in 4 wheel drive. This car has been serviced regularly,however I have only had this vehicle in 4wheel drive 5 times since I have owned it(new). The potential repair is in excess of $1000. 00, because I have been told that it is in the front transfer case because the noise is not there in 2 wheel drive. Can you please help me. Has this happened to many silverado owners.

Purchased a 2005 silverado. Noticed from the beginning that it drove odd at times. . Spoke with a mechanic and he told us that when it broke in it would drive smoother. It was just shifting hard. It seemed like it was in 4wd at times. This went on for some time. We live out a ways and put alot of miles on a vehicle. Problem continued to get worse. Took it in to the garage at 17k mechanic said he couldn't find anything. Kept ignoring the problem. Twice charging us for things not covered under warranty like alignment and rotation. We took the truck in 5 times for the same problem. Close to the end of warranty the mechanic told us if we had any more problems they would note them so the warranty would cover them. Not the case. During this time I was taking my daughters friend home and was in a really tough spot against the side of a very big hill and realized I had no 4wd. We came sliding down. Fortunately no injury. On and off again 4wd until about 1mo later no 4wd at all. The truck was taken back to the garage when the service 4wd light was on and the mechanic turned it off and told us it was unrelated to the problem we were having. This was just weeks before the 4wd went altogether. During this time we contacted the garage and gm. No help for the problem. One left it up to the other to fix the problem. In the meantime we are catching rides because a truck without 4wd is useless to us here in the wintertime. We discovered from asking others that this may be a common problem in these trucks. Seems like the same. 4wd engages itself for awhile and then stops working altogether. There are times when losing 4wd unexpectedly,where we live, put you in a life threatening situation.

I purchased this vehicle new. A few days after using the four wheel drive I received a "service 4wd" message. Returned the vehicle to the dealer. Dealer said they needed to update the flash. A few weeks later same warning. Returned it to the dealer and they performed the same action. Shortly thereafter the vehicle began to periodically self-engage into 4wd low when stopped (traffic signal or stop and go traffic). Returned the vehicle to the dealership a total of 9 times in the first 72,000 miles (extended warranty). Shortly after the warranty expired, the 4wd began malfunctioning again self engaging then not functioning at all. Returned to dealership and they said it would cost $125 for them to look at the vehicle but since this was a recurring problem they would take care of it for free. Dealer updated the flash again and said the problem was fixed. Less than 1 week later at a 2-way stop the problem returned. When I was stopped the vehicle put itself into 4wd low without me knowing. As I entered the intersection I realized the problem and pressed the accelerator to the floor to avoid getting hit by cross traffic. I managed to get the vehicle off the road; however, when I attempted to disengage the 4wd I was unable. After returning home in 4wd low I parked the truck and did some research. Turns out this was a pretty common problem and chevy still doesn't have a solution. When I started the vehicle so I could take it to the dealership it somehow put the transfercase in neutral and gave me a "service 4wd" message which prevented me from selecting any drivetrain setting. After turning the vehicle off and waiting 15 minutes I started the vehicle while holding the 2h selector. It engaged into 2h and at that point I figured I had enough. I disconnected the wire harness from the transfer case actuator. I have been driving around without 4wd ever since.