What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[BourbonNcigars]

Knock, slap or tick?

Damn. We need a sound file uploaded for clear definition of engine sounds.

 

[gooffeyguy]

Knock, slap or tick?

Sounds kinky..... Lol

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

 

[BourbonNcigars]

Sounds kinky..... Lol

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

Sounds like a question you get asked after you pull out your $20 bill.

 

[Ridin Solo]

Knock, slap or tick?

lol uhhhh...... sounds like a knock to me.. not the best video but its all i have at the moment.

 

[swathdiver]

lol uhhhh...... sounds like a knock to me.. not the best video but its all i have at the moment.

Lifter and either power steering or a/c compressor noise. Get out the stethoscope and poke around!

 

[Hi-psi]

That sounds more valvetrain related to me.

 

[Doubeleive]

sounds like a sticky lifter to me, my 03 does it off & on

 

[Ridin Solo]

As y'all have suggested, I also believe it is lifter noise... It only happens on cold starts (so far) and seems to go away after the engine warms up, do y'all reccomend I take it in to be checked out? I have had AFM disabled through my BB tune since I bought it at 20k miles (it now only has 76k miles) because I was hoping to avoid this issue, at least until a much higher mileage.

 

[Hi-psi]

Do you have a warranty? If so, absolutely.

If you don't, just before your next oil change do a crankcase Seafoam treatment.

I've heard/read really good stuff about Kreen from Kano Labs, but it isn't as readily available as Seafoam.

 

[Ridin Solo]

Wish I did but I don't because its not 2018 anymore so that puts me past the 5 year powertrain warranty period, unfortunately.