Spark plug question

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2010gmcyukon

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AC Delco iridium plugs are only about .50/each more than double platinum. This is the OEM type of plug, I wouldn't downgrade plugs just to save a $4. You'll just have to change them again sooner.
 

avalonandl

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Out of curiosity what did the dealer charge you?


Arm, leg, left nadz..... $ 577 plugs and wires all ac delco premium components

Seriously too much but I really had no choice. They were the orig plugs. I checkd the easiest 1 to first see this- was quite disappointed actually as this vehicle appeared to be well maintained.

I spent 30 minutes trying to rethread the OE plplug and realized that my 64 yo body was worth more. Plus if I fukd up and strippd a plug hole that was my ***....

I rationalized this out by installing the air ride compressor myself- dealer wnted 900$ I did it for cost on Rock auto $ 285.

I knew the compressor was bad and negotiated the price down from the dealer I bought this from and then bought a powertrain warranty with the savings to handle any AFM issues,,,,
 

RST Dana

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I changed mine on my 16. 1-7 were a breeze. 8 not so much. Ended up removing right side inner fender (4 minutes).
 

jz57

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Lifting the truck on front passenger-side, removing front passenger-side wheel, and accessing #8 spark plug easily
 
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Did all mine this past Sunday. Did them all from the top and had to use a step stool. Passenger side I was basically laying on the airbox and reaching down. Thought about going through the wheel well, but the time it would've taken to jack up and remove the wheel and liner I would've been done.

The back plug pretty much had to do by feel.

I loosen the plug with socket/extension then I have a 4-5" length of 3/8 hose (I think) that I stick over the insulator and use to unscrew it the rest of the way. After applying anti-sieze I put the new plug into the rubber hose and use it to get it threaded finger tight then use torque wrench for final tightening.

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18
 

wjburken

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Did all mine this past Sunday. Did them all from the top and had to use a step stool. Passenger side I was basically laying on the airbox and reaching down. Thought about going through the wheel well, but the time it would've taken to jack up and remove the wheel and liner I would've been done.

The back plug pretty much had to do by feel.

I loosen the plug with socket/extension then I have a 4-5" length of 3/8 hose (I think) that I stick over the insulator and use to unscrew it the rest of the way. After applying anti-sieze I put the new plug into the rubber hose and use it to get it threaded finger tight then use torque wrench for final tightening.

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

Last time I had to replace plugs, I found that a 3/8” ratchet drive then a 3/8” to 1/4” adapter then a 1/4” to 3/8” adapter then a 3/8” drive deep socket gives you the proper length to get in between your header and heat shield without putting you too far into the a/c stuff works well. I also take out the bolt holding the dipstick out and rotate it out of the way.
 
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