After stopping I get a clunk in the rear end. It feels like the rear brakes are not releasing. If I use my emergency brake to stop. it doesn't clunk. I'm thinking some kind of pin in the rear end isn't resetting. Its a 99 tahoe 227,000. 5.7 vortex 4l60e trans positrac limited slip 3.73. Where can I find a repair manual for this rear end. Thanks if anyone can help.