This Yukon continued to have intermittent low oil pressure problems after replacing a bad oil inlet tube oring. I use Motor Medic Motor Flush to clean this sludgefilled engine and restore oil pressure. This applies to LSbased engines including 4.8l, 5.3l, 6.0l, and 6.2l engines found in Chevrolet Silverado, Tahoe, Avalanche, Suburban, and GMC Sierra and Yukon.

You can purchase the motor flush I used at the following link: https://amzn.to/3xo2a1n

I am an Amazon associate and earn a very, very small commission on any sales made at the above links. The price is the same whether you use these links or not, but these links do help support my family. I will never recommend a product that did not work well for me. Thank you!