Hi Customer (name blocked for privacy). Thank you for asking your question on Just Answer.
I went through all the TSBs to see if there were any known issues with the 07 R1500 axles and did not find anything. I would recommend taking it to the dealer and asking them to do a recall check on your truck to see if there are any open recalls that need to be done. Also you can ask them to check to see if there are TSBs about the issue you are speaking of (cause there system does updated TSBs faster then what I use).
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Thank you for asking your question on Just Answer, I am pleased to assist you with your concern.

