I have just clocked up 8000klm and my driver side rear wheel bearing has collapesed for the second time, does anyone know why, or could someone supply me the part number of the original and i can see if i can get the same bearing incase the ones i have got are inferior. The first time it happen i thought i used the wrong grease and the bearing collapes because of the heat. All help will be good thank you
To make matters worse i am in Australia and the sierra never made it here
Cheers Thierry

Premature wear is usually caused by not torquing the hub nut up to the required torque.

In the case of the Sierra its around 250 NM

bump

What is the correct torque - in the process of putting mine back together at the mo. what grease is recommended as well?