1996 push button GMC 4x4 issue I am considering the purchase of a 1996 GMC Sierra SLE ext cab short bed 4x4 that is in aimmaculate condition. The bes is non-scratched! It has 63,000 documented original miles and has the push button transfer case control. She runs fantastic except for one thing: when I tried out the 4WD the lights just blinked. That is, when I went rom 2HI to 4HI, the buton light would not get out of blinking mode. Same for 2HI to 4LO. I could hear the transfer case engage and when going to 4LO the gear range certianly was in LO as I drove for about 100 feet and could tell. Oh yeah, the seller is asking $6500 which is right at KBB for private sale in excellent condition. Afraid I might get into an expensive trandfer case repair here...any advice?