Whine Noise and lower than normal oil pressure - Need advice ASAP

[FlipZ71]

Wow....   

[BIGDOGx]

Ouch thing looks like it grenaded. I fear of this because my truck whines like a sob which of course the dealers state is normal. Oh well she is under warranty for another 3-4 years so if it does go it will be out of GM's pocket!

[HondaHawkGT]

On 3/20/2019 at 10:42 AM, pickupman87 said:

Not sure if anyone is still following this thread but the shop just sent me a picture of my oil pump.

 

She gone

 

Looks very similar to what you see when the oil pump gear on a Ford 5.0 Coyote fractures, although they use a more traditional gerotor-style pump. These oil pump gears are usually made of powdered metal which gives them excellent wear resistance. The downside is that powdered metal gears tend to be brittle and prone to failure due to fracture. Usually caused by vibration (harmonics). 

 

Any ideas on what might have caused the failure? Bad harmonic balancer pulley? AFM-related vibration?

[Sierra Dan]

Real question is.....  did any fragments from this failed pump get into the engine and do more damage?