WillEngineer
TYF Newbie
- Joined
- Nov 14, 2019
- Posts
- 17
- Reaction score
- 6
So another point, I did show the video to my father-in-law who has a solid knowledge of engines. His comment was "sounds like lifters, definitely valve train".
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
So another point, I did show the video to my father-in-law who has a solid knowledge of engines. His comment was "sounds like lifters, definitely valve train".
Some more specifics, like what symptoms the Denali has, would make it easier to give better answers.
Over all the LS engines are pretty reliable.
The Denali will have the 6.2L and 6L80E 6 speed transmission.
Being that it's a 2011 it will have AFM/DOD (active fuel management/displacement on demand) which is known to be problematic if frequent oil changes are not done.
A cam and lifter swap to NON-AFM components is the best way to fix this and avoid future problems but it does require pulling the heads and reprogramming the ECM to turn off AFM.
If it has low oil pressure then it is a good possibility that it just needs a new O-ring on the oil pickup tube.
I would suggest taking a bluetooth OBD2 reader with you, if you have one, so you can check for potential codes that might give you additional info about the problem.
Once you go look at it, post up some more info on here and maybe we can give you some better insight.
Didn’t see the year of the 6.0 you were looking over & assume they were all 4x2. 05 Eddie B would be the top pic. Earlier models had know issues involving the heads, studs and coolant contamination from casting sand left in the block.
The 11 Denali is susceptible to infrequent oil changes leaving the cyl fuel control (AFM) prone to failure. The Denali will be AWD or 2WD with that lovely 400+ hp 6.2 and possibly be loaded with features. Is it XL?
The 6.0 motor will need a good local mechanic to advise of proper service and diagnostic. Without it, it’s a crap shoot. The MPG factor will be slightly higher but you’ll walk to the rhythmic beat of fuel quality weariness and absolute maintenance schedules. The motor may be at end of life as 20 years is fast approaching them. It’s got room if you need it but you will not have the Cadillac ride of the Denali.
The 6SP o/d in the Denali is tried, true and it loves to handle the hp/tq of the 6.2. It handles towing well and with regular tows an updated trans cooler is wise.
I [emoji3590] oil burners, but when they go south, your married to an investment that’s hard to recoup. If it’s for family and towing, get the Denali. It’s turning radius, features, quieter, better ride is superior and the wifey will want to drive it. I’d rather spend the additional dough on the AWD maint portion of a Denali w/ a crate motor vs known Diesel issues on an older truck.
Lastly, three kids. The 3rd row on the Denali was either fought over to get or avoid. It’s not as comfortable as the 2nd row bench seat. The bench seat is not as comfy as the front row captains chairs. The ideal set up is 1st & 2nd row capt chairs for ez access to 3rd row and comfort. There’s a slim chance it may have 1st or 2nd row a/c seats. We have the XL bench on our 08 Denali. The girls usually fall over and sleep on long trips while my 6’3” son sprawled across the entire 3rd row with a blanket and iPhone.
Bring your kiddos to see what they like best for comfort on both. Happy wife (+ kids) is happy life [emoji4]
Sent from my iPhone using Tapatalk