I have a 98 sonoma 2.2 2wd and the rear end has just started whinning pretty loud...the faster i go the louder it gets. Some people have told me its the spider gears and some say the ring and pinion....also anyone know if it would have the 7.5 in or the 7.6...pinion in it. I already know its a 4:10 because its a GT5 code in the glove box.