2003 X5 Slip/Clunk on hard acceleration

[kls1969]

Good morning from a first time user. I have a 2003 X5 3.0 When I accelerate sharply from a stop, I get a slip feeling followed by a clunk. It's like something moves/slips/rotates for a very short distance and hits a stop. When I accelerate slowly or easy, no slip or clunk. It only happens once(no chatter or clicking) and only lasts a second but it is quite pronounced. I have no vibrations or other noises. Is this something you guys and girls have experienced and hopefully repaired?

[White94RX]

Sounds like the transfer case to me.

[66 6]

rear wheel slippage activates the transfercase to move torque to the front driveline. Check your driveshafts and axles for play. No dash lights?

[jclausen]

I would check the plastic gears in the transfer case actuator motor, very common wear issues