hysinthius

I replied to your mail. ultimately i got rid of it. but we are pretty positive through a friend who has had many come in after i got rid of mine...and he fixed them with new factory replacement cams / some aftermarket as well. what he was finding is the cam lobes were out of spec due to wear. there are many articles about this (improper heat treating) and was an issue all the way up into the next generation as well. at the end of the day I took advantage of covid time trade in craziness and got a new ride. Switched over to a 22 diesel super-duty tremor. to those that have the issue good luck, its definitely a headache that no one should have to deal with on a vehicle. good luck gents.

here are some picks of the sensors. I also found a code which for some reason is in a different part of my scanner...im still learning it. its for the MAP sensor. while it doesnt rate a check engine light according to the scanner. I ordered one of those. should be here tomorrow.

Yes I have done all of the above. I need to run to the dump, so I will do that when and when I get home I'll take some pics of the live data and post them. my scan tool is not as fancy as the one above.

105k on my 15. if it was for the 'rona and working from home since March I would most likely be at 135k or so.

I have these as well but 275/70r18 on stock wheels with a 3inch left level and rough country control arms. so far have 35k miles on there with minimal wear. With that level I have no rubbing at that size.

yes I am familiar with those. In fact i have some on the bench as a last case. I just was hoping I could fix this properly.

Anyone?

Funny I just saw this. I noticed this as soon as I bought my truck in 2015. Took it in for the first of numerous recalls to be told that they couldnt find an issue so I gave up on it. Might shifts to the left slightly if you hit a bump while going around a curve. Good to know. J

Hey guys, I'm not sure what to do other than light this thing on fire. 2015 GMC Sierra SLE 5.3 Gas, Replaced Cats / Y pipe by gm at 79000 miles under warranty that was after they had my truck for a week going through all of GM's guideline tests to get it covered. At 100K miles Check engine light came back on. Same codes P0420 and P0430. - Put new plugs and wires in and found that both sparkplugs on the rear cylinders had some of the ceramic missing. Replaced them with NGK 5019 - Replaced plug wires with MSD 32819 - Replaced front and rear 02 sensors with Denso 4940 and 4974 Cleared codes drove it around taking it easy on it and both P0420 and 430 came back within 10 miles So I bit the bullet and ordered replacements y pipe and cats from magnaflow: Magnaflow 52642 | GMC/Chevrolet | Sierra 1500/Silverado 1500/Suburban/Tahoe/Yukon XL | 4.3L, 5.3L | Direct-Fit OEM Grade Catalytic Converter Federal (Exc.CA) While I was doing that my battery starting acting up so swapped that out with a AGM. So being that everything was cleared at the time drove it for about 3 days no issues...guess what codes are back. The odd thing now is that before it would take 5-10 min and the code would come back now it takes about a day or so. But same thing... P0420 on bank 1 / P0430 on bank 2. I’ve checked for exhaust leaks and rechecked the bolts on the y pipe and made sure the O2 were tight. I’m at a loss here...no idea. My local GMC dealership auto parts department are morons ...previous dealings so I don't trust them. Any thoughts? Unfortunately I live in a state that needs the codes cleared (NY) Any help would be greatly appreciated. John

I have a 2015 SLE Crew Cab...what would I need to do the upgrade? Do I need the harness as mines a SLE. I need brighter lights being in the sticks and all the deer around here. j

I assume that offset moved your tires outboard slightly? would spacers not have worked? curious as I would like to do the same with the stock wheels not sure if id keep my 18's or go to stock gmc 20's. I love the look of the stock wheels. Whats your plans for your 20's? j

Wow shes a looker. Nice looking truck.