Spark plugs

I have a 2016 Yukon SLT that I purchased brand new. I only have 51k in miles on it. I still have the factory plugs and wires on her. Given their age should I think about replacing them?

I'm doing my front brakes this weekend and will pull a couple plugs to see how they look from each side. Thanks...

kaiserwillie said:

I have a 2016 Yukon SLT that I purchased brand new. I only have 51k in miles on it. I still have the factory plugs and wires on her. Given their age should I think about replacing them?

I'm doing my front brakes this weekend and will pull a couple plugs to see how they look from each side. Thanks...

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Because of age only on the wires, I would replace them. While they are off, do the plugs too, but that is me.

I would wait until closer to 90k. If the engine is healthy (not burning oil). They should last the full 95k interval - see my posts with pics on my plugs (I show both sets from 2 changes):

Rygrego said:

Spark Plugs do not wear out with time only miles, same for the wires. Save the money and change them together in another 50,000 miles. I have a 2016 also with 101,000 and I just changed my plugs and wires and I believe I could have gone another 40,000 miles easy. And the rear plug on the passenger side is a bi*ch to get out.

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It's extra work, but pull the wheel and fender liner. Then you get excellent access to the #8 plug, not to mention the others on that side.

Rygrego said:

Spark Plugs do not wear out with time only miles, same for the wires. Save the money and change them together in another 50,000 miles. I have a 2016 also with 101,000 and I just changed my plugs and wires and I believe I could have gone another 40,000 miles easy. And the rear plug on the passenger side is a bi*ch to get out.

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SuperOldSchool said:

I would wait until closer to 90k. If the engine is healthy (not burning oil). They should last the full 95k interval - see my posts with pics on my plugs (I show both sets from 2 changes):

Replaced plugs and wires at 76k - 2015 Denali

Hello Sharing pics of plugs at 76k. Changed wires as well. Manual states 97,500 miles to do this, but I tend to do routine maintenance early, since I don’t drive in ideal conditions. Waiting until 100k might also make it hard to get plugs out... They look great. Probably no issues going...

www.tahoeyukonforum.com

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I knew this was going to happen. I mentioned the wires because, IMO, they take more abuse than the plugs. They are exposed to all the elements and the constant hot/cold under the hood. They are also 10 years old. I did recommend them, only if thinking about it and do the plugs while in there but if all is running fine now, then don't give it a second thought.

kaiserwillie said:

I have a 2016 Yukon SLT that I purchased brand new. I only have 51k in miles on it. I still have the factory plugs and wires on her. Given their age should I think about replacing them?

I'm doing my front brakes this weekend and will pull a couple plugs to see how they look from each side. Thanks...

Click to expand...

Right now I have 212K miles on my 2016 Tahoe. Still had the original plugs and wirers until today. I had to change the Purge Valve this afternoon as it threw the check engine light on. I also changed out the plugs and wires and filters. If I was not going to NYC July 4th weekend for 2 months I would have left the plugs in it. Used all a/c Delco parts.

I did my plugs right at 100K miles, they were fine, easily could have kept going. Wasnt as bad as everyone was making it out to be, but a lot of climbing on and around the car to get it done. #8 was a challenge but too some creativity and got it no problem.

jgold47 said:

I did my plugs right at 100K miles, they were fine, easily could have kept going. Wasnt as bad as everyone was making it out to be, but a lot of climbing on and around the car to get it done. #8 was a challenge but too some creativity and got it no problem.

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Bear in mind, in the future, changing plugs and wires are just like oil changes, transmission services, filters, power steering fluid changes, cooling system services, transfer case and differentials fluids services, brake fluid service and pads replacement, belts and hoses replacements, wipers blades replacements....etc. This is all maintenance services and are to be done BEFORE a problem arises and damages done to systems and components. Could you have gone farther on the plugs, sure, right up to the point where you have a misfire on a trip with the family and then you have an inconvenience. Maintenance pays and breakdowns cost. Plus, with maintenance services, you know the total cost in advance.