What are your must-do things on new-to-you gmt900?

[jnicks01]

If it came from the rust belt, make sure you can get the spare down. They can rust and get hung up. Don't want to find that out on the side of the road.

 

[LoganN97]

Does anyone know for sure when the afm/dodge started being used in chevy?

 

[LoganN97]

Hate autocorrect, afm/dod, not dodge.

 

[Fless]

Hate autocorrect, afm/dod, not dodge.

There should be an "edit" link at the bottom of your post; you can use that instead of adding another post. Just an alternative.

 

[LoganN97]

There should be an "edit" link at the bottom of your post; you can use that instead of adding another post. Just an alternative.

Thank you, didn't know I could do that.

 

[Geotrash]

Does anyone know for sure when the afm/dodge started being used in chevy?

2007 on the 5.3 and 2010 on the 6.2, I believe.

 

[FasterBass]

Didn't think this would be such a big deal but do yourself a favor and upgrade/replace your seat foam. Mine was beat and lopsided. Didn't realize how much it affected my enjoyment of the truck till I replaced mine! Of course all the usual fluids, plugs, wires, etc, but this one surprised me.

 

[m1dn]

Didn't think this would be such a big deal but do yourself a favor and upgrade/replace your seat foam. Mine was beat and lopsided. Didn't realize how much it affected my enjoyment of the truck till I replaced mine! Of course all the usual fluids, plugs, wires, etc, but this one surprised me.

Yup, that’s on my todo list, my ****** can feel the slide on the left, i even posted about it sometime ago hahaha.

Where did you get the foam for it?

 

[Trey Hardy]

Just got myself 08 Yukon XL Denali with 130k miles, picking up in few weeks.

What are your must do recommendations when getting these used trucks?

I’m planning on going down regular oil change, filters and have shop check suspension.

Anything else i should include right away, such as tranny oil?
As far as I’ve read the 08 6.2 doesn’t have DoD, so won’t need to disable this.
What about fuel/oil treatment, anyone adds anything regularly? I liked to throw in some MMO on occasional fuel ups and oil changes on my older f150, not sure if it’s a good idea with 6.2 since it takes premium fuel?

Mmo solved my dod lifter issue at 300,000 miles! It’s good stuff I use it for the extra quart now and moved up to a thicker weight 10w40

 

[m1dn]

Mmo solved my dod lifter issue at 300,000 miles! It’s good stuff I use it for the extra quart now and moved up to a thicker weight 10w40

Love mmo, used it on all my boat engines!

 

[m1dn]

Ordered cushion from seatshop

 

[LoganN97]

So would a 2009 tahoe lt with 155,000 miles be a good buy? What should I look for when looking over the engine and rest of the vehicle? Any and all info is appreciated as I have mostly owned ford expeditions and don't really get the chance to work on chevy other than my in laws 04 tahoe with a 4.8. All I know is they're very reliable. Their tahoe is pushing 300,000 miles and only has a small trans leak.

 

[petethepug]

Here’s a good what if scenario on future upgrades or $ spent on the motor …

Post in thread '2009 Tahoe - Need help with AFM/DOD full delete parts list.'

2009 Tahoe - Need help with AFM/DOD full delete parts list.

Recently i had a sudden drop of oil pressure on my 09 tahoe... while it's still in spec, and i have DOD disabled via tune, it's still nagging at me. looks like i'm holding a steady 25-28psi at hot idle... Main thing i don't like is following the 10psi per 1k RPM, when i get up in the 5k range...

www.tahoeyukonforum.com

Unless it’s a unicorn Tahoe with the 6.2L it has AFM. 09 with the 5.3 is when it got the 6SP trans. Better milage and drivability. 155k milage is pretty nice to start. I’m at 160k on my 09. I do about 10k a year since ‘20 when purchased.

 

[LoganN97]

Here’s a good what if scenario on future upgrades or $ spent on the motor …

Post in thread '2009 Tahoe - Need help with AFM/DOD full delete parts list.'

2009 Tahoe - Need help with AFM/DOD full delete parts list.

Recently i had a sudden drop of oil pressure on my 09 tahoe... while it's still in spec, and i have DOD disabled via tune, it's still nagging at me. looks like i'm holding a steady 25-28psi at hot idle... Main thing i don't like is following the 10psi per 1k RPM, when i get up in the 5k range...

www.tahoeyukonforum.com

Unless it’s a unicorn Tahoe with the 6.2L it has AFM. 09 with the 5.3 is when it got the 6SP trans. Better milage and drivability. 155k milage is pretty nice to start. I’m at 160k on my 09. I do about 10k a year since ‘20 when purchased.

So definitely buy the afm delete kit, got it.

 

[petethepug]

Yes, if you’re going into the motor and you’ve found a keeper or you found possible AFM related issues, the motor is relatively easy to wring another 75-100 hp out of while deleting the AFM.

 

[m1dn]

After driving for a week with Diablosport tune and raising idle i say tune will be my new must have on used GM cars.

More at
Post in thread 'What did you do to your NNBS GMT900 Tahoe/Yukon Today?'
https://www.tahoeyukonforum.com/thr...s-gmt900-tahoe-yukon-today.44151/post-1745974

 

[Charlie207]

Here’s a good what if scenario on future upgrades or $ spent on the motor …

Post in thread '2009 Tahoe - Need help with AFM/DOD full delete parts list.'

2009 Tahoe - Need help with AFM/DOD full delete parts list.

Recently i had a sudden drop of oil pressure on my 09 tahoe... while it's still in spec, and i have DOD disabled via tune, it's still nagging at me. looks like i'm holding a steady 25-28psi at hot idle... Main thing i don't like is following the 10psi per 1k RPM, when i get up in the 5k range...

www.tahoeyukonforum.com

Unless it’s a unicorn Tahoe with the 6.2L it has AFM. 09 with the 5.3 is when it got the 6SP trans. Better milage and drivability. 155k milage is pretty nice to start. I’m at 160k on my 09. I do about 10k a year since ‘20 when purchased.

When I was 1st in the market for a car that eventually led me to my Yukon, there was a 2009 Tahoe LTZ with the 6.2 @ 15x,000 miles for sale not too far (25 mins away) and I didn't know much about the variations. A week or so later when I realized I was going to need a new/replacement car the 2009 was gone.

 

[Malii Denali]

What’s a ball park figure on how much changing all the fluids are minus an oil change goes for? I recently bought an ‘09 with 160k. The oil change was done before I took delivery, the tranny looked clean and full when I looked at it. But after reading a few of these replies I’m ready to get mine done.

 

[Doubeleive]

What’s a ball park figure on how much changing all the fluids are minus an oil change goes for? I recently bought an ‘09 with 160k. The oil change was done before I took delivery, the tranny looked clean and full when I looked at it. But after reading a few of these replies I’m ready to get mine done.

if you take it to the dealer close to a grand, that cost is split between fluids and labor
these are "estimated" cost's from my dealer locally some of it I am not 100% sure, the $100 estimates may be low
trans: $250
coolant $199
brake flush $100
power steering $100
transfer case $100
front diff $100
rear diff $100

 

[OR VietVet]

What’s a ball park figure on how much changing all the fluids are minus an oil change goes for? I recently bought an ‘09 with 160k. The oil change was done before I took delivery, the tranny looked clean and full when I looked at it. But after reading a few of these replies I’m ready to get mine done.

Either you do it or have it done. IMO, ALL fluids need to be done and then you have a base for the age and easier to keep track of and protect your vehicle. That is if you plan to keep it. I just did my oil change today and I still had 25% Oil Life left. It was the time at my mileage interval.