Don't always trust your mechanic, fixed my "blown" engine for $7.
- Thread starter 73TA
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Might be a DOD or AFM problem causing the fouling of the plug. One of my vehicles would simply get oil all over #1 plug and every 6 months it would start to miss-fire, just replaced the plug and all good to go. Then one day it started to misfire, and I had good compression, spark, and fuel, and what had happened was my DOD lifter collapsed. I bought this kit for $50 to relieve the collapsed lifter, broke the DOD so it would not activate and blocked off the oil passage then had my ECM programmed for $50 to remove AFM/DOD and bought new gaskets and did the whole job for around $200.. It was not a bad job to do, and the next time would go quicker...
Just make a note, if you have a fouling plug on 1, 4, 6 or 7, then chances are you have a lifter going bad...
Here is a video on it. and this worked flawlessly for me.
John
Just make a note, if you have a fouling plug on 1, 4, 6 or 7, then chances are you have a lifter going bad...
Here is a video on it. and this worked flawlessly for me.
John
About 30K miles ago, with about 95K on the clock, with our 5.3L 2007 Yukon, I noticed a low idle miss. The dealer debug started with the PCV and along the way found it didn't have the valve cover upgrade. They did some more diagnostics and determined I was getting some oiling on a plug primarily due to a piston ring issue.
GM paid for all the parts (new valve cover, 8 pistons, 8 ring sets, etc., etc. etc.) My dealer installed it all very cost effectively for me. Great support from GM. Zero issues since, runs like a top.
GM paid for all the parts (new valve cover, 8 pistons, 8 ring sets, etc., etc. etc.) My dealer installed it all very cost effectively for me. Great support from GM. Zero issues since, runs like a top.
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jimr5454
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Did you?
BlaineBug
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Still waiting on those pics!
ivin74
05 NBS Nali
thompsoj22
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Great video, Shadetree for sure but effective. Need to show the GM engineers their fubar brainfart is being disabled with hammers/chisels!! LOL So glad i bought our denali and it does not have afm/dod. I was completely unaware of the system when i bought it and if it werent for pure luck i would be faced with the challenges the dod system inflicts on high mileage engines like mine.
Tonyrodz
Resident Resident
Here's a simplified explanation of the dod/afm issue. Starts at around 5 mins in.
BlaineBug
Full Access Member
Shit show!
ivin74
05 NBS Nali
Tonyrodz
Resident Resident
I honestly thought he might've tried to do the right thing--for his channel anyway. I do(did) work for alot of used car dealers, and alot of them are the stereo typical used car dealers.
Whomever gets that Denali will have an almost new 6.2.
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BlaineBug
Full Access Member
I believe he can rightfully increase the price to above book value this time around. Maybe it's a win win. He can earn some extra profit in addition to covering his expenses.
Hope it works out better for him rather than selling for the exact same price while having to basically rebuild the top end for free.
Tonyrodz
Resident Resident
Not just the top end, he put in a new cam too.
BlaineBug
Full Access Member
Absolutely.
pwtr02ss
Full Access Member
For the stabilitrack and abs lights, check the plug above the driver side rear shock. I replaced the shocks on the avalanche and that plug somehow came loose. It’s a common thing, even though I wasn’t touching it. I can’t remember the exact location, just up high on driver side.
Sorry for digging up an old thread. Are you telling me that your well out of warranty Yukon had this issue and GM paid for the parts? I'm confused. lol
Yes, N/C.
