100,000 preventive maintenance

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2014 Yukon Denali

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I bought a used 2014 Yukon Denali. Put about 10,000 miles on it and am about to hit 100,000. I’m not experiencing any issues, but prefer to do preventative maintenance than wait for a problem. I intend to replace plugs/wires, both belts and pulley. Anyone suggest anything else? If so I would love product/brand recommendations also. FYI - Vehicle is in NW Pennsylvania if that makes any difference.
 

wjburken

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I bought a used 2014 Yukon Denali. Put about 10,000 miles on it and am about to hit 100,000. I’m not experiencing any issues, but prefer to do preventative maintenance than wait for a problem. I intend to replace plugs/wires, both belts and pulley. Anyone suggest anything else? If so I would love product/brand recommendations also. FYI - Vehicle is in NW Pennsylvania if that makes any difference.
Welcome to the forum from Iowa. Post up some pictures of your Denali.

As for 100K maintenance, in addition to plugs and wires, belts and pulleys, I would suggest you change out all your fluids if you have not done so yet. This includes flushing your radiator, at the minimum dropping your transmission pan and replacing the filter, changing out your transfer case fluid as well as your differentials, brake and power steering. This will get you to a state of known life on these things and will help keep your investment running well for a long time.

Word of caution, when draining your differentials or transfer case, take out the fill plug first so you know you can get new fluid in before you drain the old fluid out. The front differential can be a tough nut to crack.

Also, 100K is about the average life span for your rear air shocks and compressor so I’d start budgeting for new ones. Arnott makes some good aftermarket ones that I’ve been happy with on my Denalis.
 

Joseph Garcia

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Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics, please.
 
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2014 Yukon Denali

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Welcome to the forum from Iowa. Post up some pictures of your Denali.

As for 100K maintenance, in addition to plugs and wires, belts and pulleys, I would suggest you change out all your fluids if you have not done so yet. This includes flushing your radiator, at the minimum dropping your transmission pan and replacing the filter, changing out your transfer case fluid as well as your differentials, brake and power steering. This will get you to a state of known life on these things and will help keep your investment running well for a long time.

Word of caution, when draining your differentials or transfer case, take out the fill plug first so you know you can get new fluid in before you drain the old fluid out. The front differential can be a tough nut to crack.

Also, 100K is about the average life span for your rear air shocks and compressor so I’d start budgeting for new ones. Arnott makes some good aftermarket ones that I’ve been happy with on my Denalis.
Thank you. Pics will come, covered in snow and filthy at the moment.
 

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