We purchased a new 2015 Suburban LTZ MSRP $74,900 plus the additional dealer installed options we had added which cost another approximately $5000. from a local large dealership at the end of August 2015. We were supposed to take delivery the following week. We attempted to take delivery on 9/4/2015 but the vehicle would not move out of the dealer's delivery area. The dealer put us into a loaner vehicle and sent ours to service. On 9/18/2015 it was supposedly ready again. However we discovered wierd electrical problems with it. The NAV / Radio would flake out on occasion, the TPMS system would not report the tire pressure correctly randomly, the Adaptive Cruse control would randomly accelerate the vehicle at full throttle at unexpected times. I would have to press the brakes very hard to stop the vehicle. I went to drive the Suburban to work and it for some unexplained reason the transfer case was stuck in neutral???. There were multiple error messages on the DIC, Service 4WD system and lower driver's side window? I had to call and have it towed to the nearest dealership. They flashed something and said it was good to go. I was still having the same cruse control problems. I took it right back to the selling dealership. They worked on it until 11/12/2015 and said it was good to go. We were still having the strange acceleration problems. The TPMS system errors were still present. The dash weird problems were still present and another problem came up: we unlocked the door with the remote but the vehicle alarm went off and would not shut off. The alarm goes off at random times. We also were noticing water on the center console depending on if the front of the Suburban was up or down. If it was parked with the front pointed up water would fill into the center console and cup holders and if it was pointed down water would drain through the A pillar and down under the dash and run under the floor covers. Since we has put less that 1000 miles on it (the dealership has put well over 2000 miles on it trying to troubleshoot the problems. It was dropped off at the dealership on 1/7/16 and has been there ever since. The dealership is very nice however they can only see that "codes" were set in the computer about some communication problem? I expect that if you have water under the dash and all over the center console and since the vehicle has been sitting in the rain outside for months waiting to be serviced one would expect some corrosion. Now when i went to get some belongings out of the Suburban I noticed it had a funky smell inside! No new car smell here! I am bummed at spending nearly $80,000 on a brand new GM vehicle and have all these problems. The dealership service department said that they have identified and fixed the water leaks and think they can return the car tomorrow. This Suburban has been in the shop longer than I have had it. I am very disappointed. If someone from GM contacts me I will keep this posting up to date with what happens.