2018 Yukon XL 85k New to Me. Best Practices?

[texasyukonfl]

Hey all,

Purchased a 2018 Yukon XL SLT this past weekend. Great price.
RWD
Gas V8 5.3L ECOTEC3 with AFM

New to these vehicles other than a 2018 Suburban my mom drives that i have worked on a little bit. Looking for best practices with the new vehicle.

Anything would help, main focus areas are:
What can i absolutely not do myself (not a trained mechanic but not bad with cars)?
Service intervals and best maintenance plan.
Known issues/resolutions
Best preventive maintenance
is the service manual worth it?

 

[Big Mama]

Being 7 years old the first thing that comes to mind is changing all fluids including rear differential, trans, and cooling systems.
An oil catch can, AFM/DFM and auto start/stop would be next. They have obd plug ins that’ll do both.
At this age hubs, tie rods, and end links are probably getting tired too.
If it was owned in a northern state I’d closely inspect underneath for corrosion.
More folks will chime in but congratulations on your new rig. If cared for it’ll last you a good long time.