Service Question for 2020 GC Trailhawk

SurfFisher · Sep 8, 2025

A dealership recommended these services for my 2020 trailhawk w/44k.

Fuel Injector Service
Throttle Body Service
Differential Flush, both front and rear
Brake Flush

I typically trust this dealership, but some of this seems unwarranted.

I do some lightweight off-roading on the beach and the vehicle shows no signs of performance issues.

Any thoughts?

Thanks!

shelbyz1679 · Sep 8, 2025

Differential and transfer case fluid, is all I could see having done at that mileage personally.

jgcrp1 · Sep 9, 2025

As above, just the Diffs and the TC. They are not a flush. Just drain and refill. Note on your rear diff the fill plug is on the side, do not pull the drain looking plug on the back.
Oh, do it yourself and save hundreds.

Egodriver71 · Sep 14, 2025

Brake fluid flush should be done every 2-3 years regardless of mileage

Diffs can wait, but do it yourself and save a ton

TC is the one needing a more frequent interval

Service Question for 2020 GC Trailhawk

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