2009 Yukon Denali 6.2 L9H Engine Replacement

[alpha_omega]

Unfortunately they even have some of the junior techs trained to sell you parts. The only way some of them will ever make more than minimum wage is by convincing you to buy a part you don’t need. And that is very easy to do when a person doesn’t know any better.
I hope one of these shops pans out for you. In the meantime, you can look up some videos on how to remove and replace the trans cooler lines and the oil cooler lines. Removal is basically just cutting the old ones off after draining the fluid, then let the lines drain as well, remove the mounting hardware and fish the lines out. Wipe everything down, plug the holes so you don’t knock anything in there while fishing the new lines in. And be sure to wrap the ends of your new lines, if they don’t already come with some kind of protective boot/cap.
Brakes you already know how to do, and the other items on your list didn’t seem too extreme. Like you said, just some routine maint that wasn’t completed by the PO.

 

[KraftMatic87]

Unfortunately they even have some of the junior techs trained to sell you parts. The only way some of them will ever make more than minimum wage is by convincing you to buy a part you don’t need. And that is very easy to do when a person doesn’t know any better.
I hope one of these shops pans out for you. In the meantime, you can look up some videos on how to remove and replace the trans cooler lines and the oil cooler lines. Removal is basically just cutting the old ones off after draining the fluid, then let the lines drain as well, remove the mounting hardware and fish the lines out. Wipe everything down, plug the holes so you don’t knock anything in there while fishing the new lines in. And be sure to wrap the ends of your new lines, if they don’t already come with some kind of protective boot/cap.
Brakes you already know how to do, and the other items on your list didn’t seem too extreme. Like you said, just some routine maint that wasn’t completed by the PO.

Yeah I’m pretty sure I can fix the trans / oil cooler lines on my own you’re right that that doesn’t look like too bad of a job. Colorado Performance & Repair is going to look at the truck tomorrow (getting it towed there) and I’ll be there when they pull the heads so I can see what’s going on in there and learn how to do this myself. If I’m paying them I might as well get a first hand lesson!

I also got a quote from a place called Acer Engines in Colorado Springs that said they would pull the motor and do a complete rebuild for $4500. Given what a new crate motor costs to get installed that didn’t sound unreasonable. Just gonna wait to take a look inside and go from there!

 

[tbone911]

I JUST went through this myself on my 2011 Denali. Dealership said they couldn't fix it and only a replacement engine was the answer. BUT... GM doesn't have any 6.2L engines right now due to all the supply chain issues. After much research, I decided to go with a Jasper Reman (www.jasperengines.com). Jasper has affiliate shops who do this work. I used the one near me and it only took them 4 days to swap! A quick search of Jasper's website brings up a handful of installers in the Denver area. Prices are steep but it comes with a 3 year/100K warranty and I was able to get it done through a reputable, licensed shop here in CA. The only hiccup was that the AFM delete valve cover failed after one day so the shop replaced it with a Genuine GM one (no charge). The shop said the internal baffle broke on the aftermarket cover that Jasper uses. I've got about 400 miles on it now after a week so I'm still babying it and will probably let my wife have it back when I get past 500 miles.

 

[KraftMatic87]

I JUST went through this myself on my 2011 Denali. Dealership said they couldn't fix it and only a replacement engine was the answer. BUT... GM doesn't have any 6.2L engines right now due to all the supply chain issues. After much research, I decided to go with a Jasper Reman (www.jasperengines.com). Jasper has affiliate shops who do this work. I used the one near me and it only took them 4 days to swap! A quick search of Jasper's website brings up a handful of installers in the Denver area. Prices are steep but it comes with a 3 year/100K warranty and I was able to get it done through a reputable, licensed shop here in CA. The only hiccup was that the AFM delete valve cover failed after one day so the shop replaced it with a Genuine GM one (no charge). The shop said the internal baffle broke on the aftermarket cover that Jasper uses. I've got about 400 miles on it now after a week so I'm still babying it and will probably let my wife have it back when I get past 500

I'll look into that if I have to, glad it worked out for you! Hoping I can still salvage this motor depending on what it ends up looking like inside. If I got a new motor I would definitely get a new torque converter installed for my 6l80 might as well so I'm not having to worry about the transmission next!

 

[alpha_omega]

I JUST went through this myself on my 2011 Denali. Dealership said they couldn't fix it and only a replacement engine was the answer. BUT... GM doesn't have any 6.2L engines right now due to all the supply chain issues. After much research, I decided to go with a Jasper Reman (www.jasperengines.com). Jasper has affiliate shops who do this work. I used the one near me and it only took them 4 days to swap! A quick search of Jasper's website brings up a handful of installers in the Denver area. Prices are steep but it comes with a 3 year/100K warranty and I was able to get it done through a reputable, licensed shop here in CA. The only hiccup was that the AFM delete valve cover failed after one day so the shop replaced it with a Genuine GM one (no charge). The shop said the internal baffle broke on the aftermarket cover that Jasper uses. I've got about 400 miles on it now after a week so I'm still babying it and will probably let my wife have it back when I get past 500 miles.

Did they give you a time for break-in? How long before you can drive a certain speed and when to change the oil? That kind of thing.

 

[alpha_omega]

I'll look into that if I have to, glad it worked out for you! Hoping I can still salvage this motor depending on what it ends up looking like inside. If I got a new motor I would definitely get a new torque converter installed for my 6l80 might as well so I'm not having to worry about the transmission next!

With that many miles…it will be next. That’s where I’m currently at. Looking for a good local tranny shop to do the rebuild.

 

[avalonandl]

You can look at a Jasper rebuild, or a crate motor.

 

[swathdiver]

@KraftMatic87 Did you talk to LT today?

 

[KraftMatic87]

@KraftMatic87 Did you talk to LT today?

I emailed and reached out to Tolman Performance on Instagram I couldn’t find a phone number though. I did however find another shop 5 miles from my house who said they would look at it tomorrow.

Colorado Performance & Repair | Auto Repair Near Me Northglenn

Looking for an auto repair near you? Visit Colorado Performance & Repair in Northglenn for oil change, suspension, alignment, brakes, and AC service. Schedule today!

www.colorado-performance.com

The owner of the shop seemed eager to help, and said I could come watch them take the heads off so and look around inside the engine with them so I can see first hand what’s going on inside the block.

If you have a number for LT let me know I would have to figure out a tow to get it down to Colorado Springs which is about an hour and half drive for me. LT might be a good back up if this shop doesn’t pan out.

 

[swathdiver]

I emailed and reached out to Tolman Performance on Instagram I couldn’t find a phone number though. I did however find another shop 5 miles from my house who said they would look at it tomorrow.

Colorado Performance & Repair | Auto Repair Near Me Northglenn

Looking for an auto repair near you? Visit Colorado Performance & Repair in Northglenn for oil change, suspension, alignment, brakes, and AC service. Schedule today!

www.colorado-performance.com

The owner of the shop seemed eager to help, and said I could come watch them take the heads off so and look around inside the engine with them so I can see first hand what’s going on inside the block.

If you have a number for LT let me know I would have to figure out a tow to get it down to Colorado Springs which is about an hour and half drive for me. LT might be a good back up if this shop doesn’t pan out.

I just talked to LT and he said to give him a call - 719-632-2167.