I happen to own a 2008 STS and I changed all six spark plugs this past fall and did not have to remove anything except the plastic motor cover held on by the oil fill cap as you noted. Glad you caught that you can get all coils and plugs out without removing the air intake... Good Show!
I took all my coils and plugs out. The only thing I removed was hose on the passenger side that sits over #3 coil. You can get them all changed without removing the intake plenum.
My 08 sts has got 110k miles on it. I bought the car with at about 88k. I've been thinking about changing the coils and plugs just for preventative maintenance, no misfires or check engine lights. Idk when's the last time the previous owner had them done, if ever. I know he took the car to the dealer for most of the work done on it. It's really great to see the intake manifold doesn't have to come off, that would have really pissed me off lol. Thanks for the video, definitely informative. I liked that one guy down below that went 'you didn't change anything, you just disconnected a plug'. That jerkoff probably doesn't know how to work on cars and wouldn't be able to figure out even if you did do step by step instructions haha.
I was definitely relieved when I realized it could be done with the intake in place. I've seen other videos where they removed it on different years. Could be they could have done it the same way I did if they thought about it first!
Dirty Dave's Garage By chance, do you have any insight into the driver's side vents only blowing cold air with the heat on? I've done a bit of research, not much but I came up with some sort of actuator or motor near the steering column is stuck and won't turn the vent doors to allow heat to come. Run into this problem before?
Just an FYI, do not put dielectric grease on the actual connections, big no no, it’s meant for dispersing water. Dielectric grease is not a good conductor. Research on it. Trust me I put some on my cam sensor inside on connections and it didn’t last long before it shorted out and had to replace another sensor for $100. Watched a video and learned it’s not a conductor and is meant to only put around the seals on water proof connectors or around the outside of the tip of coil pack boot.
having this same problem right now. thanks for the video. I also thought it was the transmission because that punch sure feels like that's what it was. I ran a check with my obd2 tool and saw that cylinder 4 is misfiring. Found your video after search for cadillac misfires... wen out and bought all the stuff tonight and I'll be working on it in the morning. Thanks! fingers crossed!!
Have you had or heard about a short in passenger side headlight. Mine won't come on, but when I hit my alarm it flashes. Plus brights work. And qhen I hit blinker it comes on. It's screwy for sure
I know this video is a few years old but you got to be really careful buying those cheap coils online. I've done that before and found out they were no good they didn't last very long or they were just bad right out of the box. I know it's expensive but sometimes it's worth just spending the money and getting the actual factory coils
I’m a novice too, I wish you showed how to do the plugs, but this was very helpful !!! Thank you for the time. If anyone knows of another video that does show the process of changing the coils plugs and wires to a Cadillac STS, please post it here. Or any tips that would help. Thanks !!! :-)
If I get a chance, I'll update the video to show that. Got a few cars in the garage I'm working on right now, so it might be a while. Removing a spark plug is pretty easy, just follow my instructions, then pull off the coil, and use a spark plug socket to remove the old one, and put the new one in.
Dirty Dave's Garage thank you for the reply !!! I got it, but now a year later I'm still facing the same problem, but I have oil on the spark plugs. Hopefully it's not something too crazy, but thanks again for the video !!! :-)
Once you've changed sparks plug and coils no check engine light on, but the car jerks when reversing and making a small ticking noise after driven a good period of time, what could be the problem? Please help me
Courtney Gray I’ve been doing research, the three main possible issues that could be causing the “jerking” is bad plugs, coils, or there is a vacuum leak (which means the intake manifold gasket is worn) something like that.
You didn't actually film yourself replacing anything- just unplugging the coils. You need to rename the video "unplugging coils and almost removing intake."
I happen to own a 2008 STS and I changed all six spark plugs this past fall and did not have to remove anything except the plastic motor cover held on by the oil fill cap as you noted. Glad you caught that you can get all coils and plugs out without removing the air intake... Good Show!
I took all my coils and plugs out. The only thing I removed was hose on the passenger side that sits over #3 coil. You can get them all changed without removing the intake plenum.
Thank You Dave for spark plug information I will need in near future. 2009 cts w/ 85000 miles
Thank you. Good video. I'm sure happy I don't have to remove the intake lol I have a 2009 STS 3.6 and it looks like it has a bit more room than yours.
I am going to try to buy everything this weekend and get it done. Thanks to you I have some good instructions to follow
good luck! Take your time, you'll be fine, and save a ton of money doing it yourself!
My 08 sts has got 110k miles on it. I bought the car with at about 88k. I've been thinking about changing the coils and plugs just for preventative maintenance, no misfires or check engine lights. Idk when's the last time the previous owner had them done, if ever. I know he took the car to the dealer for most of the work done on it.
It's really great to see the intake manifold doesn't have to come off, that would have really pissed me off lol. Thanks for the video, definitely informative.
I liked that one guy down below that went 'you didn't change anything, you just disconnected a plug'. That jerkoff probably doesn't know how to work on cars and wouldn't be able to figure out even if you did do step by step instructions haha.
I was definitely relieved when I realized it could be done with the intake in place. I've seen other videos where they removed it on different years. Could be they could have done it the same way I did if they thought about it first!
Dirty Dave's Garage By chance, do you have any insight into the driver's side vents only blowing cold air with the heat on? I've done a bit of research, not much but I came up with some sort of actuator or motor near the steering column is stuck and won't turn the vent doors to allow heat to come. Run into this problem before?
Haven't had this happen yet. If I find any info about this other than what you have, I will try and pass it along for you.
Thanks Dave! Exactly the video I needed
Just an FYI, do not put dielectric grease on the actual connections, big no no, it’s meant for dispersing water. Dielectric grease is not a good conductor. Research on it. Trust me I put some on my cam sensor inside on connections and it didn’t last long before it shorted out and had to replace another sensor for $100. Watched a video and learned it’s not a conductor and is meant to only put around the seals on water proof connectors or around the outside of the tip of coil pack boot.
thanks so much for this video its gonna be so easy now
thanks alot for posting this video. it gave me some in sight. i am having the same issues with my sts also.
Mine is running great since I swapped out the coils/plugs! I was really worried it was the tranny going the way it was acting.
having this same problem right now. thanks for the video. I also thought it was the transmission because that punch sure feels like that's what it was. I ran a check with my obd2 tool and saw that cylinder 4 is misfiring. Found your video after search for cadillac misfires... wen out and bought all the stuff tonight and I'll be working on it in the morning. Thanks! fingers crossed!!
Awesome video and very informative. Great job. Helped a lot. Thanks.
Glad it was helpful!
Not a sts ,cts
Dang!!! Guess I can't do it myself. This is more than what I know what to do.
its not that bad
Have you had or heard about a short in passenger side headlight. Mine won't come on, but when I hit my alarm it flashes. Plus brights work. And qhen I hit blinker it comes on. It's screwy for sure
No, but it doesn't surprise me...GM always seem to have quirky electrical issues
I know this video is a few years old but you got to be really careful buying those cheap coils online. I've done that before and found out they were no good they didn't last very long or they were just bad right out of the box. I know it's expensive but sometimes it's worth just spending the money and getting the actual factory coils
I got rid of the caddy, but what you say makes sense
I’m a novice too, I wish you showed how to do the plugs, but this was very helpful !!!
Thank you for the time.
If anyone knows of another video that does show the process of changing the coils plugs and wires to a Cadillac STS, please post it here.
Or any tips that would help.
Thanks !!!
:-)
If I get a chance, I'll update the video to show that. Got a few cars in the garage I'm working on right now, so it might be a while. Removing a spark plug is pretty easy, just follow my instructions, then pull off the coil, and use a spark plug socket to remove the old one, and put the new one in.
Dirty Dave's Garage thank you for the reply !!!
I got it, but now a year later I'm still facing the same problem, but I have oil on the spark plugs.
Hopefully it's not something too crazy, but thanks again for the video !!!
:-)
I will have to crank my Cadillac 4 or 6 times before it spark ....or the battery run out
Once you've changed sparks plug and coils no check engine light on, but the car jerks when reversing and making a small ticking noise after driven a good period of time, what could be the problem? Please help me
Samyel Lyles could be a transmission mount they are made of rubber on these if I’m not mistaken lol
The jerk when reversing or shifting into drive
Had a question for you where did you order your plugs and coil packs?
Just got them off amazon. Don't remember which vendor tho
I've added some links in the description if you're still looking for the parts!
Dirty Dave's Garage my 05 sts has that jerking feeling when it's idling, never while I'm driving. Could this be the reason?
Courtney Gray I’ve been doing research, the three main possible issues that could be causing the “jerking” is bad plugs, coils, or there is a vacuum leak (which means the intake manifold gasket is worn) something like that.
Is this a v6 or a v8
v6
How long did it take to complete job?
maybe an hour, hour and a half?
you didn't take manifold off
ced coun there was no need to, I explained that in the video
Ran into high water up to the door bottom of the door now the 06 Cadillac STS will not start any answers
Have any problems with that brand of ignition coils you bought on Amazon?
not while I owned the car, but I traded it in a couple months ago....
You didn't actually film yourself replacing anything- just unplugging the coils. You need to rename the video "unplugging coils and almost removing intake."
The hardest part of the job was getting to the coils. I thought it was pretty obvious what to do next once you can get to everything....