Motor Mount Replacement Instructions/Video?

[YukonCrazy]

Need to replace the driver side motor mount and haven't been able to find a complete write up on swapping out a mount. A youtube video would be ideal, but haven't found one for a NNBS.

 

[Smokymance]

not questioning you, but how did you figure out u need a new mount...i always wondered...

 

[YukonCrazy]

Sure thing. If you look at the following thread, you will see a video of what a broken mount looks like on page 1. On page 2, I posted a video of my motor.

http://www.tahoeyukonforum.com/threads/broken-motor-mount-test.76977/

 

[Smokymance]

Holy crap...ur engine wants to fly away!!!! that will do it!

 

[YukonCrazy]

It certainly is rocking. Now I need to figure out how to replace that motor mount.

 

[Smokymance]

Well I did some reading and as I figured u have to support engine up before going under there and taking bolts appart. If U have a cherry picker u should be all set. Here is a thread I found as well.

http://www.gmfullsize.com/threads/how-to-support-engine-to-replace-mounts.263668/

 

[YukonCrazy]

I suppose it would be wise to replace the passenger side at the same time?

 

[Smokymance]

I would. All that rocking probably put a lot of strain on the other side. Trans mount too maybe. Shouldn't be hard if u remove the cross beam under engine.

 

[YukonCrazy]

I also assume I want to go with ACDelco OE part?

ACDELCO 15854941 GM Original Equipment
RWD; Trans. code 4L60-E; 4 speed Automatic trans. $99.79

 

[Smokymance]

You could. But also this Oem is the one that busted. Lol. That is enough right there to confuse u. How many miles on car.

 

[YukonCrazy]

135K

 

[YukonAZ]

Driver side is fairly easy I don't have any videos but I do motor mounts on Border Patrol tahoes once or twice a week so I can give you my advice and I'm sure others will chime in. The easiest way I have found is to jack the vehicle up and lower vehicle on to jack stands, remove the driver side tire and plastic fender liner most work will be done through the wheel well, remove the exhaust manifold heat shield or tweak it a bit for extra room, then support engine with a jack and piece of wood (under oil pan is ok), remove the short section of the steering shaft from firewall to power steering rack and then loosen the 3 bolts holding mount to frame then you can lift the motor up with the jack and have easier access to the 4 bolts holding the mount to the engine block, then wiggle the mount out through the top and reverse steps for install, all bolts should be a 15mm, you can also use a pry bar to tweak the old motor mount heat shield for more access to the bolts. Hope this helps!

 

[Smokymance]

that doesnt seem too painful, what more is involved with pass side?

 

[VICDBOSS]

I'd suggest to go with an oem mount. There's been issues with aftermarket ones. The driver's side is easy. The passenger side is PITA.


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[BLCKSTRM]

Driver side is fairly easy I don't have any videos but I do motor mounts on Border Patrol tahoes once or twice a week so I can give you my advice and I'm sure others will chime in. The easiest way I have found is to jack the vehicle up and lower vehicle on to jack stands, remove the driver side tire and plastic fender liner most work will be done through the wheel well, remove the exhaust manifold heat shield or tweak it a bit for extra room, then support engine with a jack and piece of wood (under oil pan is ok), remove the short section of the steering shaft from firewall to power steering rack and then loosen the 3 bolts holding mount to frame then you can lift the motor up with the jack and have easier access to the 4 bolts holding the mount to the engine block, then wiggle the mount out through the top and reverse steps for install, all bolts should be a 15mm, you can also use a pry bar to tweak the old motor mount heat shield for more access to the bolts. Hope this helps!

Why doesn't anyone disassemble the mount itself? It has two nuts holding the top plate and heat shield to the rest of the mount. I took it apart and got it out - and the new one back in - with only removing the exhaust manifold heat shield and ride height sensor from the wheel well.

Also, I had to do this after an aftermarket special died after only 9 months. I'd go oem for sure here...

 

[Denali Deen]

Are there any companies out that make upgraded mounts with polyurethane?