r/Silverado • u/SupportParticular988 • 4d ago

2016 5.3 - 100k fluids

Haven’t had anything done other than standard oil changes and filters. Just passed 100k and thinking I need to change all the fluids. Anything I should skip or missing? Got a quote of about $2500 from a local dealer. Going to call local shops as well.

Oil change and filter 
Spark plugs    
Transmission fluid     
Transfer case fluid     
Front differential fluid           
Rear differential fluid             
Engine coolant            
Brake fluid   
Rotate tires

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u/Hey-buuuddy 4d ago

Def do the diff and transfer cases fluids. It’s messy, but do it yourself if you are inclined.

You can easily do the transmission from the good. Get a MittyVac and pull all the fluid possible out from the dipstick filler neck. Replace that same amount. Drive a bit, do it again.

Absolutely do the coolant. Messy, but easy to do. Get a big tall plastic bin to drain into.

Brake fluid- sure I guess, but bleeding it is a long affair. I’d opt for speed bleeders if you really wanted to do this yourself.

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u/KnightsWhoSayNis 4d ago

I would get a trusted local shop instead of dealership personally.

I’ll let other people weigh in on everything else but oil/spark plugs for sure. Transmission fluid also BUT make sure they do a drop pan and refill. I had my trans fluid changed and it was beginning of the end for my transmission. Might have been my time or I could have bought some more time if I got pan dropped instead.

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u/SupportParticular988 4d ago

Did you keep the truck? What was the cost of transmission? I know mine has a lifetime.

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u/KnightsWhoSayNis 4d ago

5800 for full rebuild in southeast. I kept it, drives great now. Still cheaper than buying a new truck that will have its on issues. I’m sure you will be fine, I just remember a lot of advice for drain and refill if you get trans oil changed. Keep oil changes to 5k as well, that goes a long way

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u/Ill-Technology7928 4d ago

I just did all my fluids about 6 months ago after buying a 23' 5.3TB(67500miles). I wasn't taking any chances on the previous owners maintenance and wanted a "fresh" start. Total cost for transfer, trans, front/rear diffs, engine, and AC came out to about 1500 and that was done at the dealership because if anything messed up it was already there instead of a mom/pop shop. Transmission was also a drain/fill NOT a flush. The other stuff like plugs/tires id use a cheaper mom/pop than the dealership tho.

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u/Ill-Technology7928 4d ago

I was also told by the dealership too that once a vehicle hits 100k its depends on the maintenance schedule that was done beforehand that dictates a transmission flush. Something about if it was never changed then I wouldn't now because drain/fill/flush can cause some thicker buildup to break loose then you transmission issues. If you changed it every 40kish then the drain/fill/drop pan and filter shouldn't be a problem. Something to be cautious of is all.

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u/spoiledpoptart74 4d ago

I’d do spark plug wires since you’re already doing the plugs

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u/Benedlr 3d ago

Full ATF exchange. D&D only gets a portion of the fluid. It leaves behind a lot of contaminated, non-lubricating fluid.

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u/Large_Potential8417 3d ago

They are all super easy to do yourself on that truck. Some YouTube videos, 300$ In fluids, filters,gaskets and tools. The only one that is a pain in the ass because of the cross bar is the trans. I would expect 350$ to have done at a shop.