2007 Chevrolet Suburban LT 1500 4dr SUV 4WD (5.3L 8cyl 4A)
I had issues with my 2007 Suburban using oil also. I bought it preowned. The documentation for my repair states: oil consumption issue J1307 15.30 (I assume this is a bulletin from GM).
The work order states, replaced all 8 pistons and ring sets with new head gaskets, intake, exhaust, found 5 scored push rods and replaced etc. Basically the engine was rebuilt at 88M miles but it was covered under warranty. NOW I just had to have the transmission rebuilt at 112M miles. No warranty for that. As crazy as it sounds my dream truck was a Suburban. This is the first one I have owned. It is basically a new truck now so I hope it lasts until I pay it off!!!