In this video I bring you along as I go through the process of swapping out an engine in a 2015 Cadillac ATS Luxury 2.5L RWD. The engine is out and now it is time to due the big swap over. Take all the parts off the old engine and put them on the "new" before we finish the transplant.
Cadillac ATS 2.5 Luxury: Engine Replacement - Part I:
Cadillac ATS 2.5 Luxury: Engine Replacement - Part II:
Cadillac ATS 2.5 Luxury: Engine Replacement - Part III:
Cadillac ATS 2.5 Luxury: Engine Replacement - Part IV:
Cadillac ATS 2.5 Luxury: Engine Replacement - Part V:
Cadillac ATS 2.5 Luxury: Engine Replacement - Part VI -
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All right folks, here's the Junkyard engine. This is customer Supply They have no idea if it's any good, if there's how many miles around it or if it's even the right engine so no idea there. this is where we left off. that's all the junk.

I Peeled off the junkyard one. of course. you know when they take them out of the wrecking yard they you know, cut the harness and cut the hoses and all that stuff. Um, so you have to take it off.

Uh, plus even if they didn't cut it I wouldn't uh I wouldn't use it because I want to make sure that you know the ECM pin configuration. everything is you know for this car. So I just got it back basically to a you know, to a long block essentially left the injectors in a high pressure fuel pump you know, coils, exhaust manifold, water pump. so hopefully it is the correct one.

I've read the comments before. you know some of you folks own shops or work at Shops and get super pumped. If a customer you know supplies their own parts which I don't care about most of the time my labor rate is higher if you bring your parts. Um, and of course there's no warranty.

Of course there's a warranty on my workmanship, but there's not a warranty on the part you know I don't care if this motor is bad or not I get paid either way and then I'll get paid to do it twice. So it's kind of a win-win Oh I sound like a jerk I Mean it's not a win-win it's a win-win for me. I guess I Guess the fact of the matter is like I can't lose I don't have to eat anything just cutting some of my zip ties off here I had this stuff out of the way. Um, of course you know I'm very transparent with my customer too and let them know yes, you can bring me an engine if it's no good.

that's your problem baby. You know? In which case, you know this guy you know agreed with I'm not going to do a hack job or a crappy job just because he brought me his own part I don't I just wants his car fixed. So anyways, typically if I sell a used engine I have several buyers that I buy into this from and they're always buying them with the warranty. so a parts and label warranty if the customer doesn't want to pay the extra 400 bucks for the you know, one year unlimited mileage parts and labor warranty I won't sell the engine because I'm certainly not gonna, you know, eat it myself I mean it's a used engine, so that's the only way I sell them if they don't want to buy the warranty.

Well, you can go buy your own engine, bring it to me and still have no warranty, but then it's just. you know, it's off my conscience. It's not my problem, so that's that's how I do use engines I may have even mentioned it I don't even know what was wrong with this one. he I wasn't asked to diagnose it.

Uh, he had another shop. they diagnosed it but couldn't replace it. It did excuse me allergic to work at least that's what I was told. So here we are.

baby there we go. So I'm just gonna work on getting the wiring harness off and getting stuff swapped over. It's kind of just the monotonous, tedious part of the whole job. Gotta swap the intake and all that garbage.
And just to forewarn you, I'm probably going to fast forward through some of this show you the process, but not every single clip. Every single fastener tedious enough. You guys don't want to sit through an hour or so of that. I'll tell you that much.

All right. Free tip for you though. Um, this is a big harness I don't know how naturally it's going to light so leave yourself some Clues particularly on spots where it doesn't seem as obvious like I had to sneak this out of behind the water pump. So I just leave myself a little note behind the water pump and then that way there it'll you get this in place, some of the rest of it kind of Falls in place and it will kind of all fall together.

All right. Foreign? Thank you Foreign Foreign thank you Okay, foreign, foreign foreign Thank you. Josh Yeah, we gave me a 13 wrench. Foreign I Think that's about it folks.

uh. oil level Center down here. Point that in that clip there no sense of putting intake on I Had to take the old intake uh, right here off the junkyard motor I Couldn't remember if this ran above or below that hope. but I knew it clipped in the intake I just couldn't remember where.

uh, this is the injectors. We'll leave that unhooked because we still need to have the intake off. I Think we need the intake off. take starter off, take the bell housing out, or take the four converter bolts out.

rather. so we're gonna leave that off. So we've got some extra wires down here. We've got to tighten up our grounds.

That's for a starter starter. that's for something else. I Don't want something in the intake? probably map sensor I would imagine. And then this was all the craft that came off that we had zip tied up to the front.

Uh, this must go on the intake too, right? We got what we got. Throttle body. yes, we got throttle body. then yep, then a map sensor here.

So like I say this is the old old intake. Um I think everything else is plugged in everything else but on the home. So let me tighten up these ground wires. let me put our uh hose back on here before I forget uh, make sure the clamps are all good I Want to tighten up all my grounds and then we'll proceed from there.

All right. Foreign got things I Want to do cat hair and they're snuggling my kitty? Um, that baby's pretty much swapped over I think I'm gonna run down to the harbor freight and grab us one of those thousand pound lifting tables it should be. you know, high enough capacity to pick this thing up and down. And I think I'm going to do that simply because it would have been nice when we're lifting it off if we could have unbolted it and scooch it.

Forward just a little bit because we had lots of room in front, but it was really tight to the back on those brake lines. and where that you know they got that piece of carpet over the back of the engine there. Uh, I mean so far it's pretty easy. pretty easy swap setup, you know, overly difficult one.
just time consuming. So I ran out of time today at too many other things going on. I got a lot going on tomorrow so I don't know one of the uh when we'll be back on. hopefully hopefully sometime tomorrow.

but just doing little chunks here put them out like this. hope you guys like it and don't get too frustrated that they're all little small parts of the same car. So anyways, catch you on the next one. Foreign.

99 thoughts on “Cadillac ats 2.5 luxury: engine replacement – part iv”
  1. Avataaar/Circle Created with python_avatars Tommy Mitchell says:

    I'm dizzy from all the jiggly bits going back on the engine. Push pin and xmas tree harness holder things always break for me. Eric is magic.

  2. Avataaar/Circle Created with python_avatars DAD TYPE 2 says:

    I thought I heard you say it seized or failure at cylinder 1, but as to why the failure, that was never determined. I will say I watched a video a few weeks back on this same caddy and engine and it had a catastrophic failure too but it started as a compression leak or failure, zero compression I forgot if it was intake or exhaust, but anyway testing was down engine was ran off and on and it seized. Turned out one of the valves on cylinder 1 chipped off like imagine the face of a clock and a piece is missing between the 2 and 4 place. And it wasn't found in the bore, so it probably cracked miss fired then came off was destroyed and seized the engine, who knows but that was the case for that one. And like I said I thought I heard Eric say this one seized at cylinder 1 but as to the exact cause we don't know as he wasn't asked to diagnose it. Anyway hope this helps but with all that goes on with an engine that may or may not be this one's problem. Maybe lack of oil services which we all know that will absolutely kill an engine. Take care all. And I'm sorry if I miss heard absolutely don't mean to put words in people's mouths.

  3. Avataaar/Circle Created with python_avatars Clay Coates says:


  4. Avataaar/Circle Created with python_avatars Nick Dama says:

    its all good thanks for sharring the journey

  5. Avataaar/Circle Created with python_avatars MountainSalsa says:


  6. Avataaar/Circle Created with python_avatars Mike says:

    Why don't you take out whatever in your mouth while recording a video. It's been months and it's still causing issues with your speech.

  7. Avataaar/Circle Created with python_avatars Eric Siebert says:

    I have a 15 Cadillac SRX with a 3.6, brought it to a nationwide chain for a fuel system cleaning. As soon as they started it the engine started running very rough, they insisted everything was OK, it eventually died and from that point wouldn’t start again (wouldn’t even turn over). I ended up having to have it towed to a shop of my choosing. Turns out they hydrolocked the motor with a faulty machine that dumped everything in at once so the motor needed to be replaced, I had about 135k on it. They were covering the cost but wanted to replace it with a like mileage motor. I made a big stink because I felt they should do better than that because of what they put me thru and I have no idea how that motor was maintained. Ended up emailing their CEO whose office reached out to me and they said they would do better than that. The shop I brought it to found a used motor with only 9k on it so thats what I ended up getting. The swap went well and the motor has run great and will hopefully get me many more years of use. So this video hits close and I can appreciate all that goes into swapping an engine on a modern day vehicle. Thanks for sharing these experiences!

  8. Avataaar/Circle Created with python_avatars Mavic Aerials says:

    That used engine exhaust manifold looks cracked in two places? Am I seeing it right?

  9. Avataaar/Circle Created with python_avatars cnicfam5 vids says:

    Rainman Ray led me here, and I've watched several, upon several videos. So if a customer shows up with a car and a used engine and says I had another shop, look at this, and they said I need a new engine. You're just gonna put in the used engine???? Seems a little different than your other videos in where you want to make sure the customer is taken care of even when they're wrong. A little disappointed to see this.of course I'm not a mechanic, but customers are customers and the pyramid runs both ways in my experience.

  10. Avataaar/Circle Created with python_avatars Thomas Kasprzak says:

    I really wanted to come over and give you my rolling chair. My knees hurt just watching you on the concrete floor. Yea, you had the foam pad, but still. Great vid.

  11. Avataaar/Circle Created with python_avatars Thomas DeMarco says:

    please explain whay you would tie up a shop with all your work coming in and your talent , in a kind way I am saying you can make more money doing less labor intensive work

  12. Avataaar/Circle Created with python_avatars Me Jesse says:

    Wait a minute, this could be the very 1st time he took the word of another shop???
    Speaking of kitty kat 🐱…Mrs. "O"
    Harbor Freight…🤔

  13. Avataaar/Circle Created with python_avatars Ralph Featherstone says:

    Eric, this is an excellent video series. I'm sure there is bound to be a customer that balks at the time and money charged to swap an engine. This series is an excellent educational tool. Should be required viewing!

  14. Avataaar/Circle Created with python_avatars Trey Cook says:

    You remember that time some guy gave you a 25% coupon for Harbor Freight, but you said you didn't need anything from there? Pepperidge Farms remembers.

    Of course, I'm just giving you some grief. I'll send another one this year or an Inside Track Club membership; whichever you'd like.

  15. Avataaar/Circle Created with python_avatars Mike Brown says:

    I don't buy used engines from individuals or junkyards unless, like the 302 Ford I recently purchased, I'm planning on a complete rebuild. They normally come with a 30 day warranty which gives me plenty of time to disassemble and inspect them. If it's a swap for a customer and they want it done yesterday, which this customer apparently didn't, I insist on a crate engine. If they say no, they can take it elsewhere.

  16. Avataaar/Circle Created with python_avatars Alisa Beheler says:

    Love your videos. Love your honesty. Just one little hint. You have women watching your videos too…. Lol. I was a mechanic in the military.

  17. Avataaar/Circle Created with python_avatars Leif Jensen says:

    The speed he moves in the fast forward parts are the speeds that you have to move to meet the manufacturer's warranty times.

  18. Avataaar/Circle Created with python_avatars Rick Marshall says:

    Wonder why the 2.5L went bad, which such low miles on it. I know everything breaks, but still. Wonder if something happened in the previous accident?

  19. Avataaar/Circle Created with python_avatars Dr Dr says:

    I don't mind if they supply their own parts, I just charge them more in labour…

    Ahh the old charge them full list for parts that the shop pays 30% of to the parts house. Actually scumbag move, charging more for the same labour, no warranty, so no risk if supplied part is wrong or bad, and actually involves less time, because no waiting for parts. Charge the same or don't accept customer supplied parts, otherwise you're just being a scumbag, imho. Forcing an option to make a part look cheaper is also shady as fuck, imho. The engine is $1200 but unless you pay $400 extra, I won't buy the engine to install, oh and if you supply an engine hourly rate goes up 50%(as an example)… But the customer would scoff at the engine if he was straight up and said it was $1,600 probably…

  20. Avataaar/Circle Created with python_avatars Douglas Rudd says:

    I would want a mechanic that would not do the job unless he was convinced it really needed it.

  21. Avataaar/Circle Created with python_avatars Wills Restorations says:

    Never in my life will I ever understand why people go and purchase a junkyard motor, you spend all that money in labor having an engine removed and replaced and then you go and do a stupid thing like grab yourself a junkyard motor, for the price of a junkyard motor you probably could have had your motor rebuilt or fixed what was wrong with your motor and now you know what you have in your vehicle. In my experience junkyard motors hardly ever workout.

  22. Avataaar/Circle Created with python_avatars LTVoyager says:

    The owner of the Caddy obviously isn’t too bright. They get a diagnosis from a shop that can’t even do an engine swap and then bring it to Eric for an engine swap and don’t even ask for a second opinion on the diagnosis. That is shear stupidity.

  23. Avataaar/Circle Created with python_avatars mod_inc llc says:

    Number 1.) The customer is a jerk for not asking for a second opinion regarding original engine failure. U🤣😂nless Mr. O knows the other shop well enough to trust their diagnosis.
    2.) Big jobs like this make the best content because it's so rare to see something like this on the interwebs. 3.) You are giving anyone who needs to do one of these in the future a huge solid not only as an overview of the details on the r&r of this block but also on flat rate price. I haven't finished the series yet but I do hope you give a wrap up at the end.
    BTW a win-win means a win for both parties not a double win for one party! 🤣

  24. Avataaar/Circle Created with python_avatars Jose Diaz says:

    Would have liked to see you run the original to hear its fault. Also wouldnt you do a compression test or leakdown on the replacement. even if yout werent paid. i wouldnt want to do it twice even if paid
    you are getting a google check so why not do it for content

  25. Avataaar/Circle Created with python_avatars David Da silva says:

    Eric where did you get that adjustable plastic fastener remover,(push pin)

  26. Avataaar/Circle Created with python_avatars Daryl Morgan says:

    Great work Eric and so much work to do with wiring harnesses every where.

  27. Avataaar/Circle Created with python_avatars Vern Nelson says:

    Great Series !!!

  28. Avataaar/Circle Created with python_avatars Peter Garofolo says:

    Amazing how you remember where everything go's. 👍 👍

  29. Avataaar/Circle Created with python_avatars Gary Alford says:

    I would never buy one of those cars !!!

  30. Avataaar/Circle Created with python_avatars W Greathouse says:

    Some people don't have a clue as what goes into changing a engine in a Cadillac.

  31. Avataaar/Circle Created with python_avatars Hola! Craig Goodwin says:

    Eric, I've been looking at that table as well so I'm looking forward to seeing how it works out for you. On to Part V! Thanks for Sharing!

  32. Avataaar/Circle Created with python_avatars Alan North Carolina says:

    Some days go faster than others

  33. Avataaar/Circle Created with python_avatars John Richards says:

    If i was the customer, I would have changed the timing belt now.

  34. Avataaar/Circle Created with python_avatars Todd Hazell says:

    Watching you removing the wire harness for that length of time, you really appreciate the wiring systems of back in the early 80's and before that where all you had to disconnect was the starter, alternator, dizzy and coil, oil and engine temp sender. 5 minutes tops.

  35. Avataaar/Circle Created with python_avatars Albert Wendt says:

    My knees hurt me watching Eric do this engine tear down! But enjoyed the video…..

  36. Avataaar/Circle Created with python_avatars J S H says:

    Jonny the Car Ninja uses hydraulic tables all the time when dropping out drivetrains. His is an expensive unit worth over 5k, bur a Harbor Freight one for a few hundred and wood blocks will do the same job.

  37. Avataaar/Circle Created with python_avatars Gary J. Ranno says:

    I have a question would it be easier to lower the engine and transmission attached to the lower subframe? Is that not how they install it at the factory?
    It would just involve unbolting the top of the struts and not the front end components. The harness would all still stay with the engine. Just a thought.

  38. Avataaar/Circle Created with python_avatars FreeKanal says:

    Great job !

  39. Avataaar/Circle Created with python_avatars Dave Taylor says:

    Full on. Just how much garbage can they throw at an ICE. The principle of which hasn't changed much since its inception. When most of that crap wasn't required to make it run.

  40. Avataaar/Circle Created with python_avatars ROBERT R Penny says:

    What was wrong with the engine in the car? Is that a form of Ecotech 2.5 as in small Buicks etc?.

  41. Avataaar/Circle Created with python_avatars Michael Greethurst says:

    You have the best channel, it is very interesting and educational. Your attitude is always spot on and logical. I always look forward to seeing them and learning new stuff, thanks for all you do and your insight. I will always be here to help your channel in any way I can, thanks again.

  42. Avataaar/Circle Created with python_avatars Ric Denali says:

    Great video / what was the total amount of time it took for the replacement?

  43. Avataaar/Circle Created with python_avatars Scott Hill says:

    My wife is watching housewives of whatever drama filled single wide trash she like's, ya I'll watch this all day my guy.

  44. Avataaar/Circle Created with python_avatars joe malone says:

    keep up the good work eric. ny would be at a significant loss without you

  45. Avataaar/Circle Created with python_avatars pilgrimpassingthru says:

    The strange things we do for entertainment. Not sure if watching you reminds me of my youth or just to see what's changed since the 70's/ 80's…
    Job well done though…