New to me 2011 Sierra Denali - Engine noise

[Chives3300]

Test drove a 2011 Sierra Denali about a week back and went to move forward with the purchase.

 

They called me a few days later and said the engine started making noise when running through the shop. No noise was heard when I did the test drive. 

 

I know lifters are a major problem with AFM Motors, but since this is the L9H wondering is this too likely lifters & cam, or something else? 

 

Miles on engine: 118k

 

Link to noise: 

 

[tlaw91]

Definitely needs lifters. A cam... maybe? maybe not. I’d have one ready when ur doing the job. Looks like a northern truck, very rusty.


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[Chives3300]

6 hours ago, tlaw91 said:

Definitely needs lifters. A cam... maybe? maybe not. I’d have one ready when ur doing the job. Looks like a northern truck, very rusty.


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Thanks @tlaw91. Yea northern.. Up in Massachusetts.

 

Would you recommended sticking with AC Delco replacement, or is there another that is higher quality?