Grand Prix - Change Transmission Mount

An often overlooked part is the transmission mount. Most people are not even aware of it, and as these cars get up in age, the need to change them gets more and more obvious. Check out this video now.
Here is some parts to get you going
Jack - amzn.to/32e7CoK
Jack Stands - amzn.to/34qAFbp
Transmission Mount - amzn.to/3iWhrin
Disclaimer
I assume no liability for property or vehicular damage or injury incurred as a result of any of the information contained in this video. I recommend safe practices when working with any and all tools, including but not limited to electrical tools, power tools, pneumatic tools, any lifting apparatus, including jacks, jack stands, and automotive lifts, manual tools, chemicals, lubricants, and any other instruments used within the video. Due to factors beyond my control, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of all above mentioned tools or equipment, or any other items mentioned above, and all information contained in this video is the sole responsibility of the user and not myself or Nexus Auto. Caution is advised and any practices by the viewer is at user discretion. Any tool or part recommendations or links are given for informational purposes only and it should be assumed to be bought at your own risk. I or Nexus Auto assumes no liability for any damages, premature part failures, or incorrect parts made from purchases made online, including but not limited to tools, parts, instruments, jacks, chemicals, lubricants, etc.

[@trey2048]

I just wanted to thank you for your video. Getting the old one out was easy. However I had to "convince" the new one to go in. I just refused to go thru the entire process to remove only to settle for the original mount lol. Regardless it's now in. Thanks so much for the guide video. 09 impala ss

[@NexusAuto]

You're very welcome. It's definitely a tricky job to do, especially trying to encourage it to go in lol. Awesome news to hear it's all put together now

[@kristianperezcruz4918]

Muy buen video saludos

[@NexusAuto]

Gracias lo aprecio

[@jeanwilliams7200]

Thank you, great job on video! I couldn't find any other videos that would help in showing me how to change my trans mount on my 98 intrigue series 2 engine. Great info, found video just by chance. Again, thanks!!

[@NexusAuto]

Thats awesome news! Same process for sure, so i'm glad you found the video and it helped. Thanks for watching!

[@Jarazek]

Helped me with my 06 Grand Prix GT, it was easy, the motor dropped in place easily, but I had to lift the motor a tad to get the dog bones in. Thanks for making the video!

[@NexusAuto]

No problem at all! Happy to hear everything went well!

[@sergioferreyra3095]

It is very good that you give yourself time to answer questions. you have a new subscriber congratulations

[@NexusAuto]

Thanks for the sub. Appreciate it!

[@cdbrown30]

Pretty clear view of the job for that I thank you!

[@NexusAuto]

No problem at all. Glad to hear the video is helpful

[@cdbrown30]

I have a series 2 3800

[@NexusAuto]

Nice! In a grand prix, or another series II model?

[@stevewheatley243]

Don't know torque specs for motor mounts but good and tight they're not goin anywhere.

[@NexusAuto]

As long as they're secure and not a safety issue, sounds like you're good to go!

[@mcdavidhome100]

Great video. Very well explained. Is there another trans mount on the other side? or is there just that one you replaced?

[@NexusAuto]

Thanks, I appreciate that. There is a mount on the other side, but it's an engine mount (so 4 mounts in total, 2 above, and 2 below). The mount on the other side is similar in concept, but it sits further in to the engine block and is trickier to get to

[@paulhall1239]

You need cv axels too.

[@NexusAuto]

For sure. They were changed soon after this video. One was really bad, actually.

[@paulhall1239]

@@NexusAuto i sure wish you lived here in Tampa fla. I got a 97 Pontiac grand prix gt. Runs great still. Have had it 23 years now.

[@paulhall1239]

Ty for the video btw👍

[@NexusAuto]

@@paulhall1239 If I lived there, you would be more than welcome to come by. I actually looked at moving from Canada to Orlando at one point, so hey, you never know what will happen in the future. I am amazed that you are a single owner of your car. Many GPs I know are multi-owner...that is awesome. Glad to see it is still running great. Glad the video helped too

[@paulhall1239]

@@NexusAuto man I love my Pontiac. Its still a bad bitch. I keep up on it pretty well. The 3. 8 is a very good motor to. I got 233 thousand miles on it. Same motor and transmission. But I do plan to buy a newer motor and transmission. The cars in excellent condition inside is mint condition damn near.

[@chuycruz8506]

Thank you so much for this video, always very helpful!

[@NexusAuto]

No problem at all. Thanks again for watching and for the continued support. Appreciate it!

[@getreal4883]

everyone that tells me they had a gran prix tell me they love it or wish they still had it mine just went over 200 thousand about 2 months ago.the 3800 moter is sweet

[@NexusAuto]

For sure, and you'll hear the same from me too. I love my GP, honestly. I'll never get rid of it. Even know people with multiple w bodies and they hold on to all of them. Great cars!

[@BloodStainedTear]

ratchet strap on one of the engine lift brackets works best for pulling and holding the engine forward while you install the dog bone bolt

[@NexusAuto]

definitely the best way, but not everyone is comfortable with doing it, or has a ratchet strap. So I showed how to do it without. But you are 100% correct

[@smoothkid765]

LMAO dog bone tool?

[@heribertogomez8860]

I have a 2001 Pontiac Gran am gt. Could you help me how to install the motor mounts. Or a video.

[@NexusAuto]

I would, but unfortunately I don't have access to a grand am at this time (which sucks, as I owned a 2001 years ago). Sorry I couldn't help on that

[@peterlona7835]

Why the plywood under the jack stands?

[@NexusAuto]

That's just my own personal thing. I have an asphalt driveway, and jacks/jackstands sink into the driveway. The wood helps keep things stable and not damage the driveway.

[@peterlona7835]

@@NexusAuto good idea, would I have to do the same process for the other side mount?

[@NexusAuto]

@@peterlona7835 pretty much. But it's much harder to get to, as it sits further in. It's a tighter fit.

[@peterlona7835]

@@NexusAuto ok, thanks. Do you have a video on how to replace the starter. 2005 Pont. Gran prix.

[@NexusAuto]

@@peterlona7835 unfortunately I don't have one at this time. Hopefully in the future

[@brycepiontek161]

Did my lower motor mount today had the issue you worried about ended up setting it on the bolts with the jack to hold some weight and prying it up with a 3 foot piece of rebar and pulling the mount bolts with a really big screwdriver

[@NexusAuto]

Damn, that's tough. But awesome making it work and getting everything done. It's a bit of a pain for sure. Thanks for watching!

[@arcentalesnoel]

Where can I buy the support for the transmission you show in the video?

[@NexusAuto]

a company called ZZP sells them, along with a lot of other parts for the Grand Prix. Check them out here zzperformance.com/collections/3800-transmission-drivetrain/products/poly-trans-mount

[@jeremiahrios4010]

I'm having an issue with a transmission solenoid on my Grand Prix. Do you have a video on how to replace?

[@jeremiahrios4010]

I didn't say before but you're videos are amazing. Thank you for your time.

[@NexusAuto]

@@jeremiahrios4010 Thanks, I really appreciate that feedback. Unfortunately, I don't have a video on the transmission solenoid at this time.

[@derekwindingland1836]

Great video!

[@NexusAuto]

Thanks, appreciate it.

[@ryandepinet5959]

Thankyou I already knew how but definitely gave me a piece of mind 👀 👀 👀 👀 someone else do it the same way I think this was a great way to show others how to I like the red touch

[@NexusAuto]

No problem at all. Sometimes that's all you need from a video! The red does look great too! Thanks for watching and the great feedback!

[@noesandoval1348]

Thank you so much men

[@NexusAuto]

Noe Sandoval no problem. Thanks for watching and glad it helped.

[@ronrichards5051]

Thnx for the vid , I had my whole engine shift and broke that Mount I was going to have the mechanic do it but I said well if you could do it I have two jacks got it done and put the CV joint boot on a Monte Carlo thank you hour-and-a-half no sockets only wrenches thanks

[@NexusAuto]

No problem at all. That sucks with what happened to your car, but happy to hear you got it done and the video helped. Thanks for the feedback!

[@ronrichards5051]

Some one cut me off and i ended up going over a median with caused everthing to shift...thnx again..

[@bighomieJ5X]

When I shift from park to reverse the motor jumps ,could this be the problem

[@NexusAuto]

It could, and it could be a variety of things. Could be a motor mount, either the front ones or the ones under the engine, could be the front mount frame (it is between the engine and the mount). Mine actually broke and it was jerky. Could be a transmission issue, and may need something simple like a flush, or could be something major. My guess is one of the top 'dog bone' mounts or the frame I mentioned above, but I could not really know for sure. Start from there and do some searching. Maybe have someone switch from park to reverse while you are looking at the engine and see if you can identify the issue. Make sure it's someone you can trust though..safety first lol

[@bighomieJ5X]

@@NexusAuto thanks I really appreciate it .

[@zacht9116]

GM cars are so nice to work on. Specially good ol W body 3800s. I did mounts on my wife's Toyota and it was much more of a nightmare than this. I got a Buick Lacrosse which is similar to your Pontiac to do mounts on.

[@NexusAuto]

Completely agree. I love working on my Grand Prix. Other older GMs are the same as well. Unfortunately, some of the newer GMs are going in the same direction as the other cars.

[@oneeyedrone4293]

3800 is a unique lovely motor, they are just bulletproof and being supercharged makes them even more fun. My L67 is pushing over 250k km on all original motor and shes solid. Other GM motors not so much, the 3400 for example was such a junker. Even though they never have issues, a thermostat swap on a 3800 motor is 5 minutes with a 10mm socket, on a 3400? remove exhausts, fluid all over the place, its a disaster. I have a 2001 olds silhouette with the 3400 original motor, now its upgeaded to a 3800 L67 with the matching HD trans (They are the same mechanically) but it still seems to run nicer due to the 1:1.1 ratio on the HD trans diff. Somehow despite having a larger motor, supercharger bolt on top, its still easier to work on the 3800 in the van than the 3400 ever was. Only pain is the power steering reservoir which is actually easier to get to via the passenger side wheel opening. This is an issue for the grand prix as well but there are some options to move the tank to the top of the motor.

[@B-S1999]

Would a bad transmission mount cause my car to shake when I turn it off

[@NexusAuto]

It can for sure. Any of the 4 mounts could cause it. Also, for the right side dog bone mount, there is a cast iron frame that attaches to the dog bone and the engine. This cracks and can cause the shake too

[@B-S1999]

@@NexusAuto yeah I checked that bracket and it's good so I guess I'll change the trans mount just gotta get the right part number for it

[@NexusAuto]

@@B-S1999 sounds good. Let me know how it goes

[@B-S1999]

@@NexusAuto well thing is autozone has 2 different mounts for my car and not sure which one to get

[@NexusAuto]

@@B-S1999 Did you end up choosing the mount? Are you seeing Hydraulic and Solid mounts?

[@manneysmith3179]

Hey I've been watching you a while very clear video. I have a few quick questions do you lift the engine the same distance to change the engine mount on the other side?? I've seen and read about 4"inches or so

[@NexusAuto]

You do need to lift it a bit more than you would this mount. You have to clear the mount entirely (which is about the same height at this mount) and get the engine a bit higher, as it is harder to get to ( it is a bit more inboard). I don't know the exact measurement, but 4-5 inches does sound about right.

[@shyannadkins7019]

Do you have a video of the other lower mount change ?

[@NexusAuto]

Unfortunately, I dont yet. I will have one in the future, but not sure when

[@ratagris21]

Thanks for posting and sharing this informative DIY video. Looks like you have a ZZ Performance trans mount. Now that its installed looks like 2 years how does you car feel? I did the dog bone poly bushings and can tell a difference.

[@NexusAuto]

It really made a difference...still no regrets. It is holding up well as of now. Some people had told me that I would feel more engine vibration before I purchased it, but I think a part of that is how well someone's 3800 runs. Mine is still very smooth. No regrets on the purchase

[@ratagris21]

@@NexusAuto good to hear and know. I know they're currently out of stock on both the engine and transmission mounts, but looks like a worthwhile investment. I feel little to no vibrations.

[@NexusAuto]

@@ratagris21 I would recommend it for sure. When ZZP gets some stock, definitely get it.

[@ratagris21]

@@NexusAuto will do.

[@mrbreezeet1]

Seriously though a good video I didn't know you had to unbolt the dog bones, I want to do as least as possible to this car. It's just transportation I'm not really any kind of enthusiast or anything. I'm putting control arms on it right now so I thought I'd do the motor mount. But the thing is it looks like the motors pointing down toward the passenger side how do I check that transmission mount? I don't want to just change every month I want to do as little as possible this thing. Would the motor looking like it's leaning toward the passenger side being indication of the front motor mount? Also I have what feels like wheel balance but it tends to go away when you release the acceleration. Could a bad motor mount along with bad lower control arm bushings cause that issue of feeling like wheel balance but going away when I release the accelerator? I have read that could be the case.

[@NexusAuto]

Hmm, a lot of questions and info here. I hope I get all of it. Thanks on the video (even with the one bolt comment LOL). Hey, nothing wrong with wanting to work on your everyday car. Most people here are just trying to make sure their ride works, like yourself. If a motor mount is bad, the engine would rock/move when revving, and when you drive and let off the accelerator, it will feel like the engine is lurching forward (like trying to throw itself forward). If really bad, it will lean for sure, and you will feel vibration from the engine when off the accelerator...the opposite of your issue. But the combination of control arm and mount...that is possible. Both act against each other, so letting off the accelerator could 'hide' the issue. Unfortunately, the passenger side mount is the hardest to do, as it sits a bit far inboard of the engine (but done similarly to this mount).

[@JavierLopez-mk7dc]

Is the motor mount the same for the other side or are they different

[@NexusAuto]

They are different mounts, and the passenger side one is a bit harder to do. It sits further inside the engine bay.

[@joyceprieto8013]

How do you put a power steering intake line 05 Pontiac grand prix

[@NexusAuto]

It's a bit of work, but not terribly hard. i would make a video, but I have closed up shop for a bit. If the weather holds up, I may try and get under the car and film. If not, it may be a while. Sorry. Joys of winter.

[@cocodog85]

please put a description of the poly mount in your reply. who makes it, how much and where to get one. and the same for a solid mount. thanks for the video. i had an 04 which i sold after 13 years, and 06 and 07 in the garage.

[@NexusAuto]

Hmmm, very specific info. I think it's best if I just post the links for you. Poly mounts zzperformance.com/3800/transmission-drivetrain/poly-trans-mount.html You can get Solid Mounts at any parts store, or online at various parts suppliers. They are pretty standard. Hope this helps. Thanks for watching.

[@deandrepitts2131]

Any video on changing the mount under the engine?

[@NexusAuto]

De Andre Pitts none yet. I plan to make one, but maybe not until next year.

[@mrbreezeet1]

@@NexusAuto Do you have that video done yet? Probably pretty much like this side is it is it not? I guess you have to unbolt the dog bones to do the front motor mount also correct?

[@NexusAuto]

@@mrbreezeet1 You would be correct there. Unfortunately, I never changed that mount yet, and therefore never made the video. Procedurally, it is similar, But it is further in and a bit harder to get to.

[@RANDOMMekhaniks]

I just got a 2007 Grand Prix and when I press the gas hard I hear and feel a couple pops, and when I brake hard I feel the same thing. It’s only on the passenger side front that I feel it. Except it’s more under the hood than by the wheel. Could it be a trans mount?

[@NexusAuto]

Sounds like a mount. It can be a few things, but the mount is very common thing to check in these scenarios. Start by first checking the 'dog bone' engine mounts on the front of the car. Have someone rev the car while in neutral (be safe, chock wheels, etc) and then abruptly release the gas...see if there is any engine movement or if you can pinpoint the noise. If not, check those dog bones while in park to see if they are loose or worn. Next, on the passenger side, the 'dog bone' engine mount doesnt actually connect to the engine, but to a another mount. Check this, as it does tend to break. (And I am willing to bet this is the cause of your noise). If these both check out ok, there is an engine mount down below (the transmission mount is on the driver side), It can be that, but it is the hardest mount to get to. And last, if that check out, there is a rare chance it can be a suspension component. Possible, but I doubt it. Hope this helps

[@mrbreezeet1]

@@NexusAuto Check the front control arm bushings also you don't even have to jack it up put a pry bar under the front control arm bushing and try to raise up on the control arm and see if it hits the the frame like.

[@NexusAuto]

@@mrbreezeet1 If it is really bad, for sure. But when loaded, it may be hard to see smaller play. But if there is a lot of noise/clunking, you are spot on

[@ericlewis5035]

How do you like the poly zzp mount? Does it vibrate much?

[@NexusAuto]

You definitely feel more of the engine, but my 3800 runs very smoothly, so I noticed virtually no vibration. However, any engine variances or a rough idle will be felt for sure.

[@juanchavez9836]

Mines vibrates more for sure until out of 2nd shift. But high speeds it’s noticeably smoother

[@mrbreezeet1]

Please do not say there is always one nut, or always that one bolt cuz that's giving into it Does that make sense? There's NOT always that one bolt.

[@NexusAuto]

Haha why does this phrase bother you so much? OF COURSE there is not *always* one nut or one bolt, but it happens often enough that is has become a running joke. Honestly, I just worked on a 2013 BMW 528XI...rear brake pads, front brake pads and rotors, rear springs, and front control arms. Every bolt came off without an issue...except one! LOL. It happens...but I work on cars everyday and it does not happen every day, especially living in an area where there is snow and particularly road salt. You really shouldn't let joke phrases bother you that much! :)

[@Emilthehun]

Great video! How is the vibration with this mount?

[@NexusAuto]

Thanks! To answer your question, very little vibration. It is noticeable, but i've had people sit in my car and didn't pick up on it. That being said, if your engine is idling poorly or your other mounts are worn, you will feel it a whole lot more for sure.

[@Emilthehun]

Nexus Auto awesome. Im just about to do the engine and trans mount , but didnt by poly lol. I have a trans am with solid mounts and hate it . Do you feel the car hooking up better?

[@NexusAuto]

I believe I do, but it is harder to say, only because I did a whole bunch of upgrades on the car at the same time, so it drove much different then before all the projects started. But to me, I did notice less play in the motor when I put my foot down. I am looking forward to do poly mounts for the passenger side mount and replacing the dog bones as well. I can turn the bushings in the dog bones, but I think I will just get it swapped out entirely.

[@SmoopyGablooy]

My car jolts when shifting, and when going from park to drive. I just got a new transmission and disappointed. Is this a possible issue? When rolling and re applying gas sometimes it jolts too.

[@NexusAuto]

This can be a few things, even including a transmission not installed correctly or a 'lemon' (although that is unlikely). However, the mounts can definitely be an issue. There is 4 mounts...2 at the front of the engine (the 'dog bones'), one on the driver side (this video) and one on the passenger side. Any one of those could be bad, and cause the issue. I had an issue very similar to yours a couple of years ago. Stand at your engine, and look at the two engine mounts at the front. We are looking at the one on your left, which is closer to the battery. It mounts to the front frame, and to the engine. However, the part where it mounts to the engine, it can break or crack. This had caused me the exact issues you were having. For reference, I found a video someone else filmed showing the engine mount in question. kzbin.info/www/bejne/eXyxh5dneZtpnJY Check that part out for any breaks or cracks. Have someone go in the car and just shift from part to drive, to reverse, to park, etc, and see if you can pinpoint where the engine jolting is coming from. Hope this helps.

[@SmoopyGablooy]

@@NexusAuto thank you soo much man, I'm looking into it now

[@SmoopyGablooy]

So is that part one of the dog bones?

[@NexusAuto]

@@SmoopyGablooy it's not part of the dog bone itself, it's goes engine block -> mount I linked -> dog bone -> frame. So it sits in between the engine and dog bone, and mounts to both. Mine had sheared in half a while ago and was causing lots of rocking and jolting of the engine

[@SmoopyGablooy]

@@NexusAuto gotcha. Thanks again

[@mikec8086]

Is it the same to change the other motor mount on the other side for the Pontiac Grand Prix( post 04 models).

[@NexusAuto]

Not really. It is a far bit harder. It does not sit where the trans mount is, but further in the engine bay. It is harder to get to and a bit harder to position the engine when you have to drop down on the new mount. I hope to have a video on it later this year.

[@wandalllither2452]

Since when an aluminum SubFrame on W-body? 2002 Olds intrigue hasn't aluminum... i bet its lighter and rustfree...

[@NexusAuto]

Yep to both, it is lighter, stronger and rust free. They changes the subframe in 2004 for all W-Bodys remaining at the time, if I remember correctly.

[@wandalllither2452]

Gotta find some car slaughtery near by, My Olds has only 4 knuckles made of alloy, the rest of suspension and frames are made of steel, requires more checking in NY. also i ve seen some aluminum front control arms on 2006+ Pontiacs G6, these control arms was super light!

[@NexusAuto]

Hopefully you can find some. Check 04+ GPs and Impalas. You should be able to locate one, hopefully. If the 06+ G6s work too, that would be a great lightweight mod. I went to 97-03 control arms, which seems only slightly lighter than my 05s (I could have just been tricking myself though lol). I went with those so I could upgrade to the larger stabilizer bar, which is only available for those models. More weight, but damn, the car holds in the corners.

[@wandalllither2452]

I just got myself that comfortable cruiser thanks! I d like to have an aluminum subframe, cuz it also absorbs more vibrations then steel! And lighter, and basically rustproof. IMO our sway bar is fine, just needs to be upgraded to a balljoint links instead of a bumpy bushings, but requires some welding... BTW if u need more stability while cornering try to install thin sway bar bushings [in Autozone theres aftermarket red 2-3mm thickness bushings + brackets just for 20 bux for any size sway bars.. AND TRUST ME ITS WORTH EVERY DIME], they goes as a set with nuts, washers, and a c-bracket, ive done it on a 2001 Chevy Blazer{rear and front}- and was SHOCKED with steering improvement and overall feeling on an uneven pavement-CAR FEELS LESS BUMPY SOMEHOW; im running 17x9.5 Corvette rims on it... Notice on our W- body rear sway bar links are balljoint kind. Im goin to do the same with front one! Hope it helps!

[@NexusAuto]

It's an awesome car. My sister had an Intrigue and absolutely loved it. I think the only reason she doesnt have it now is someone ran a red and t-boned her. But damn that car was strong. Although a right off, the exterior completely absorbed the entire impact. It is an awesome cruiser...enjoy! Sounds like all the right reasons to have the aluminum subframe. Just a matter of finding one, I think. The sway bar itself is fine for everyday use, but I wanted a bit more, so I did a rebuild front and rear (struts, springs, trailing arms, control arms, ball joints, tie rods, driveshafts, stabilizer bars and links, strut tower bars front and rear, etc) so it was just all part of my project. Hmmm...never thought of thin sway bar bushings. Sounds like an awesome upgrade. The car handles amazingly well, but I always believe there is room for improvements on any project (it is worth noting that my GP is no longer my daily driver, but a project car). I will definitely look at those for a future project. Thanks for the tip! Let me know how the front ball-joint style links go once you get it all done!

[@jakeschreiner9398]

My 2001 Grand Prix is squeaking when I shift from drive to reverse, I can hear the same squeak when I’m driving down rough roads. I’ve sprayed the transmission mount with lubricant and that didn’t help. It sounds like it’s coming from driver’s side engine bay down low. Please help I have a video on my channel demonstrating my problem. I can’t replicate the noise with the car off, the car has to be on and I have to shift from drive to reverse. I’ve shook the car and the engine every which way and can’t make the noise!

[@jakeschreiner9398]

I think I figured it out. I have a cold air inductions cold air intake, and every time the engine moved significantly, the cone filter neck rubbed against the air box making a horrible squeak sound. After readjusting the filter, it seems to have gone away!

[@NexusAuto]

Hi Jake. I watched the video and that is a strange one. It was hard to hear it in the video, but it seems to be at its worst when you go into reverse. I really did not hear it at all when going into park or drive. If the sound is there for those drive positions, it is very hard to hear. Here is a couple of things to try (if you haven't done this already) 1. Open up the hood and have someone else shift just like you were. Be careful, of course. Just listen and see if you can pin point the noise even further. Sometimes just having that line-of-sight helps 2. If you are comfortable with it, you can disconnect the 2 front 'dog bone' mounts and rock the engine. See if you can hear the noise when you move the engine. Dont rock it too hard, just enough to see if you can replicate it. 3. If you know someone you REALLY trust and if you are REALLY comfortable with it, you can jack up the front end, on jack stands, and with the rear wheel chocked. Go underneath the car and have someone shift once again, with their feet on the brake. This one can be nerve-racking for some, so be very careful, but hopefully you can. see if you can find the noise that way. Right now, just basing it on nothing more than your description or the video, I am leaning on either a worn mount, or maybe even a trans issue. Hopefully the above tests will Let me know if you have any other questions

[@CountryMama337]

2000 impala makes a clunk noise when put in reverse. Could it be the transmission mount?

[@NexusAuto]

It is mostly likely a mount for sure. It can be either the transmission mount, lower engine mount, 'dog bone' front engine mounts, or possible, the brackets the the dog bone mounts attach to on the engine block. A good way to tell is have someone shift the car while you have the hood open and try and listen for where the noise comes from. Front, left or right, it should hopefully give you a good idea of where to go next.

[@mrbreezeet1]

@@NexusAuto Where is the lower engine mount located I have a 3.1 l it is a 01 Grand Prix SE.

[@NexusAuto]

@@mrbreezeet1 It's not easy to see, like this one. It sits further in on the right side of the engine. It is very tight to get to (but very possible to do)

[@thatgreatdeal]

Any idea how to tell if the transmission or motor mount is bad? I have this noise when shifting from park to reverse and when doing a quick throttle tap. kzbin.info/www/bejne/a3OscnVugZtpmsU

[@NexusAuto]

it can make some noise, similar to what you hear in your video. I have seen it much worse. Also, the video is not completely conclusive that it is the mounts or something else, and which mount is it. There are 4 mounts for these engines. One on each side by the wheels, and 2 in the front (dog bones). If the side ones are bad, you will get some pretty noticeable engine vibration at idle and when accelerating. If the front ones are bad, the engine will noticeably rock back and forth when accelerating... you will feel it. Even if you pop the hood and have someone rev the engine while in park, you will see the engine rock. Hope this helps.

[@lawrencemeyers1212]

I believe it 60ftb why fix it if not broken bro

[@NexusAuto]

Good question. I made the video to show anyone who needs to have it fixed so they can do it for themselves. As for me? My GP was my daily driver, but has now become my project car. So I have been upgrading different things as I go. I love the car but from my first car onwards, I always have to upgrade and tinker. Just my nature.

[@alexmatheny9295]

Where did you get that mount? I think this is the same mount thats gone bad in my girlfriends GXP

[@NexusAuto]

I bought it from ZZP. It is their solid poly trans mount. Hope that helps.

[@Smoothy162]

I've got engine and trans mount spacers that I need to put on. Does it matter whether they go on top or bottom of the mount?

[@NexusAuto]

the can only go on one way. The bolt patterns for both the engine and transmission mounts are spaced out differently on the top and bottom, so they can only go on one way. Hope that helps out.

[@glenharper3136]

Was the old mount bad?

[@NexusAuto]

Glen Harper it was pretty worn, but not terrible. I've seen come out that are damn near flat. But it was not in great shape