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George H.
George H., ASE Certified Technician
Category: Chevy
Satisfied Customers: 18761
Experience:  GM Tech ASE Master Tech 15+ years
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Today I turned into a parking lot and my truck felt like I

Customer Question

Today I turned into a parking lot and my truck felt like I had run over a parking curb. but there was nothing there. the rear end of the truck pulled down and then came back up with a loud bang, G80 rear end.
Submitted: 1 year ago.
Category: Chevy
Expert:  George H. replied 1 year ago.

Hello I will help you with your question,

How many miles on the truck and has the rear end ever had any service done?

Tires the same size all around?

Customer: replied 1 year ago.
160,000 I just got the truck and have no idea on any of its service records all tires are new and the same the outside of the rear is dry as well as the axle tube ends no leaks.
Expert:  George H. replied 1 year ago.

The first thing I would do is get the cover off and inspect for debris, if no big chunks are found refill with the correct 75W-90 Synthetic Axle Lubricant and add the friction modifier if the label does not specify it has modifiers included.

Do several figure eights in a quiet parking lot and see how it performas after that.

If you still have problems the locker will need to be rebuilt.

Please let me know if you have further questions

Thank you

Customer: replied 1 year ago.
Thanks I will give it a shot and let you know what the end results are.
Expert:  George H. replied 1 year ago.

Great, please let me know what I can do to help

Thank you