Three problems related to transfer case have been reported for the 2005 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 GMC Yukon based on all problems reported for the 2005 Yukon.
2005 GMC Yukon. Consumer writes in regards to various electronic problems including service air bag indicator. The consumer stated he experienced chronic problems with speedometer, starting problems, wheel hub and traction control sensor. Also, the transfer case was replaced.
This basic incident has occurred approximately ten times. The 4wd control module malfunctions at random. The vehicle message center will display "service 4wd," and a clicking sound can be heard as the lights on the transfer case control panel switch on and off, switching the vehicle in and out of gear. Several times this has happened in such a way that the truck shifted into 4lo at moderate speed. Once, the vehicle stalled in an intersection with the abrupt shift. I am convinced that this is a systematic issue with gm 4wd trucks, but it is in no way being addressed. It is an extreme safety hazard when a 5400 lb. Vehicle suddenly shifts into low range or neutral without advance warning. A simple internet search shows that this has happened to many other gm vehicle owners. The only remedy seems to be removing the relay to cut power to the module, thus rendering this "mighty" 4x4 a 2wd sled. This is a safety hazard of the highest order! I cannot say enough negative things about the electrical system of this vehicle in particular and the build quality in general. It destroys tires, it is a pleasant surprise when something works as it should, and I had to replace the "heavy duty" transmission at 120k when the power bands catastrophically failed. For shame, general motors! I will never again purchase another of your shoddy vehicles.
Bearing and ticking noise coming from transfer case when using 2h at 65 mph & greater. Noise goes away in auto 4 wheel.