replacing front and rear transmission mounts on 97 SSEi

Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's, Olds 98 91-96, Buick Lesabres and Park Avenue 91-96. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
Post Reply
User avatar
harofreak00
Administrator
Administrator
Posts: 26022
Joined: Mon May 19, 2008 6:04 pm
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
Location: Browerville, MN
Contact:

replacing front and rear transmission mounts on 97 SSEi

Post by harofreak00 »

The 97 needs the front and rear transmission mounts replaced to cure a major grinding noise during acceleration (I hope its the mounts!)

I have ordered the mounts from Rockauto, they were pretty reasonably priced.
ANCHOR 2881 Front Transmission Mount $ 43.79
ANCHOR 2778 Rear Transmission Mount $ 10.57
I have access to the FSM, but I am looking for hints/tips for the replacement. I have access to Ed's shop with lift, but its about an hour away. Would it be worth it to drive that far to have access to the lift? or can this be done just the same in the driveway at home?
Andrew - owner/operator of Bonnevilles Unlimited
Image
2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 115k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 280k | Official Bonneville Hauler
alec_b
GXP Member
GXP Member
Posts: 227
Joined: Tue Feb 03, 2009 7:48 pm
Year and Trim: 1996 SSEi, Bright White, Medium Teal, 197k

Re: replacing front and rear transmission mounts on 97 SSEi

Post by alec_b »

Anchor... I've heard bad things. You may want to cancel that order and get something a little better.

The front mount is pretty easy: Remove (3) 15mm mount-to-frame bolts, jack engine/trans up, remove (3) 13mm mount-to-trans bolts, remove (1) 18mm bellhousing bolt. Wiggle mount out and replace with new.

The rear one, I really don't have a tip for that one, other than be prepared to invent some expletives you've never even heard of. They are not easy at ALL. Someone else will surely chime in with advice.

And yes, for gods sake use the lift. If you do it on your back you will be sorry. It's worth the drive.
Mods: Clear corners, gutted airbox, Alpine CDA-9886. Plans: 4x SensaTracs, high-flow, FM 80, 3.5 pulley, and for gods sake some good rubber.
User avatar
harofreak00
Administrator
Administrator
Posts: 26022
Joined: Mon May 19, 2008 6:04 pm
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
Location: Browerville, MN
Contact:

Re: replacing front and rear transmission mounts on 97 SSEi

Post by harofreak00 »

I'm not really concerned about the longevity of the mounts, I plan on selling the car as soon as I'm done with these mounts. Thanks for the heads up though.
Andrew - owner/operator of Bonnevilles Unlimited
Image
2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 115k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 280k | Official Bonneville Hauler
User avatar
mntnbkr
GXP Member
GXP Member
Posts: 229
Joined: Sun Mar 22, 2009 1:46 pm
Year and Trim: '99 SSEi
Location: Fenton, MI

Re: replacing front and rear transmission mounts on 97 SSEi

Post by mntnbkr »

The front one is a piece of cake... you replace that one from under the hood as opposed to under the car, so no lift required. Support the tranny with a jack and a board to distribute the load when you remove the mount.

The rear one may be a bit more difficult, but very doable without a lift. You'll want a set of jack stands to set the car on while you use the jack to support the transmission as before. There are (6) bolts total to remove and the mount will come out. Only thing I'm not sure of is how easy it is to physically remove the mount if the trans is still in place (my whole engine and trans were out of the car, so there was lots of room to move the mount). You'll want an 1/2" or 13MM (either will work) open end, or box end ratcheting wrench for the bolts between the mount and the trans. Can't remember what size the other ones are. Also, the highest of the bolts between the mount and the trans is easiest to get at from the drivers side wheel well, the others from underneath the car.

Good luck.
~Adam
'99 SSEi
'02 Volvo S60 AWD 2.4T
'02 Jeep Liberty Sport
'89 Chaparral 187XL w/ 4.3L I/O Mercruiser
'00 Cannondale Jekyll 900SX
Follow me on twitter: adumb
User avatar
mntnbkr
GXP Member
GXP Member
Posts: 229
Joined: Sun Mar 22, 2009 1:46 pm
Year and Trim: '99 SSEi
Location: Fenton, MI

Re: replacing front and rear transmission mounts on 97 SSEi

Post by mntnbkr »

In response to alec_b: getting that rear trans mount bolted up was the part that I dreaded most about putting the engine / trans back into my '99 SSEi, but I was surprised at how smoothly it went. When I took those bolts out, I was inventing new cuss words...mainly because I didn't have a box end ratcheting wrench of the correct size. Before I even started the re-installation of the engine, I got the right tool for the job, and it went smooth as silk. It took about 15 minutes. Oh, and I didn't have the luxury of a lift for my project either...so It can be done.
~Adam
'99 SSEi
'02 Volvo S60 AWD 2.4T
'02 Jeep Liberty Sport
'89 Chaparral 187XL w/ 4.3L I/O Mercruiser
'00 Cannondale Jekyll 900SX
Follow me on twitter: adumb
User avatar
harofreak00
Administrator
Administrator
Posts: 26022
Joined: Mon May 19, 2008 6:04 pm
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
Location: Browerville, MN
Contact:

Re: replacing front and rear transmission mounts on 97 SSEi

Post by harofreak00 »

If the front mount is easy like you say, I'm going to replace just the first and take it for a test drive to see if it fixes the issue.

If I do the rear and its still making noise, I might have to do the dogbone also.
Andrew - owner/operator of Bonnevilles Unlimited
Image
2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 115k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 280k | Official Bonneville Hauler
User avatar
repinS
Moderator
Moderator
Posts: 7391
Joined: Mon May 19, 2008 9:51 pm
Year and Trim: 09 G8 GT
Location: Toronto, Canada
Contact:

Re: replacing front and rear transmission mounts on 97 SSEi

Post by repinS »

I replaced my front mount with the Anchor one last week, I actually gained a rubbing noise (wouldn't quite call it grinding) at mid-throttle. Clunkiness is still there, but throttle response has improved - the powertrain doesnt seem to be torquing back anymore.

I'm thinking dogbone next...
Image
Jerry /// Past: 95 SSEi (June 2010 COTM) -- 04 GXP (July 2011 COTM)
91 Honda Civic Wagon DX 2WD (fuelly) -- 208,000km -- 92hp -- Autocross Warrior
09 Lexus LS460 AWD -- 94,000km -- Daily Driver
09 White Hot G8 GT -- 155,000km (fuelly) -- LS3 Cam -- GM LS3 CNC Ported Heads -- Kooks 1 3/4" Long Tube Headers -- Solo Catback Midsection -- Hooker Maxflow Mufflers -- Pat G Tune -- Rotofab Intake -- Tein S-Tech Springs -- GXP FE3 Dampers -- BMR Subframe Cradle Inserts -- BMR Subframe Connectors -- Forgestar F14 Gold 18x9 +40 -- Michelin Pilot Super Sport 245/45/18 -- Maverick Man Carbon Fiber Spoiler
User avatar
Whitecrystal1
Posts like an L36
Posts like an L36
Posts: 920
Joined: Wed May 21, 2008 10:16 pm
Year and Trim: 10 Silverado
Location: Dumfries, VA Member: #169

Re: replacing front and rear transmission mounts on 97 SSEi

Post by Whitecrystal1 »

I replaced the front mount on my 95 with the Anchor from Rockauto a few months back, very easy to install. I haven't had any problems with mine. :)
Image
2002 Buick Lesabre Custom L36 Titanium Blue Metallic/Medium Gray Cloth
2004 Buick Lesabre Custom L36 White/Graphite Gray Cloth
2015 SS Roof, Spare & 6M 6.2L LS3 415HP/415TQ SLIHRM/Jet Black Leather-Red Stitching
2010 Silverado LTZ Crew 4x4 6.2L L9H 417HP/403TQ NHT Black Granite Metallic/Ebony Leather
2013 Enclave Premium AWD 3.6L LLT White Diamond Tricoat/Cocoa Leather
2001 Wellcraft Martinique 2400 Merc 5.7L BIII 327hrs


1995 Bonneville SSE L36 Dark Polo Green Metallic **R.I.P. 4/28/10 236,400 miles**
User avatar
harofreak00
Administrator
Administrator
Posts: 26022
Joined: Mon May 19, 2008 6:04 pm
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
Location: Browerville, MN
Contact:

Re: replacing front and rear transmission mounts on 97 SSEi

Post by harofreak00 »

Holy crap! The mounts arrived today. I ordered them at 10pm Tuesday, it shipped out 4pm on Wedneday and it was on my doorstep before 9am today (Thursday)!!!!

Let the work begin.
Andrew - owner/operator of Bonnevilles Unlimited
Image
2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 115k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 280k | Official Bonneville Hauler
User avatar
LeSabreUltra
Posts like a Northstar
Posts like a Northstar
Posts: 1609
Joined: Wed May 21, 2008 10:36 pm
Year and Trim: 2012 Nissan Maxima SV Premium
Location: Auburn. AL - SEBF 08, 09, 10 Survivor

Re: replacing front and rear transmission mounts on 97 SSEi

Post by LeSabreUltra »

I have an Anchor mount on my car and haven't had any trouble with it as far as durability goes...

That being said, it transmits vibrations a LOT more than the AC Delco...I kinda wish I'd gone with AC Delco for that reason. It's kinda weird that my 4.3 powered S10 is now the "smooth" idling vehicle. o.O
.
.
.
-Dan
_

Image

2012 Nissan Maxima SV Premium • Super Black • Charcoal • VQ35DE • Bose • Factory HID • 5000k LED Int/Ext
_

Image__I n n o v a t i o n__T h a t __E x c i t e s
User avatar
harofreak00
Administrator
Administrator
Posts: 26022
Joined: Mon May 19, 2008 6:04 pm
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
Location: Browerville, MN
Contact:

Re: replacing front and rear transmission mounts on 97 SSEi

Post by harofreak00 »

Well I tinkered on the car a lot today. I got the mount replaced quite easily, I'm glad I didn't drive to Ed's to use the lift, it would have just made things harder LOL.

The front mount was definately shot, but it wasn't causing the grinding. I took it for a test drive immediately after the swap and it was exactly the same. I was pretty sure its not the rear trans mount, so I didn't even mess with it.

I took another look at the TAM mount and decided to take it off to have a better look. It came out pretty easily and I noticed that the metal "tube" was amost completely seperated from the rubber. Looking at how this mount is designed to work, I figured the way it was failing shouldn't be causing the grinding. The engine is pulling down on the mount. However, when the engine is accelerating, the engine rocks back and the TAM actually rubs against the metal engine bracket. I REALLY want to narrow this down, but I don't wanna be tossing money on this car like its nothing. Rockauto wants $41 for the TAM, reasonable. Right?

Image
Image
Image
Image
Image
Last edited by harofreak00 on Thu Apr 16, 2009 6:40 pm, edited 1 time in total.
Andrew - owner/operator of Bonnevilles Unlimited
Image
2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 115k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 280k | Official Bonneville Hauler
User avatar
harofreak00
Administrator
Administrator
Posts: 26022
Joined: Mon May 19, 2008 6:04 pm
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
Location: Browerville, MN
Contact:

Re: replacing front and rear transmission mounts on 97 SSEi

Post by harofreak00 »

I just ordered the TAM from RockAuto for $41... also got the high pressure steering line for my 00 that I have needed for years.
Andrew - owner/operator of Bonnevilles Unlimited
Image
2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 115k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 280k | Official Bonneville Hauler
ddalder
Resident Gearhead
Resident Gearhead
Posts: 2599
Joined: Wed Apr 01, 2009 7:11 pm
Year and Trim: 2004 GXP, 2008 STS, 2020 XT6
Location: Alberta, Canada

Re: replacing front and rear transmission mounts on 97 SSEi

Post by ddalder »

Love the `Barney` hands :lol:
Image
Bose Luxury Sound System w/Touch Screen Navigation, Addition of Factory XM, 2005 MY Antenna, OnStar Upgrade (3G),
RainSense Wipers, Backup Camera, '00 Style Door Panel Courtesy Lights, Heated Washer Solvent, 2X Remote Trunk Release,
Turn Signal Mirrors, Center Console Courtesy Lamp, Rear Outboard Heated Seats, PVD Chrome 18" Factory Rims, Upgraded
Carbon Fibre Appearance Interior Trim, Highly Modified Main Body Harness, Instrument Panel, Door, Door Panel & Headliner
Wiring Harnesses, Custom Fuse Box & Tire and Loading Information Decals, Additional Acoustic Insulation[/size][/color]
User avatar
repinS
Moderator
Moderator
Posts: 7391
Joined: Mon May 19, 2008 9:51 pm
Year and Trim: 09 G8 GT
Location: Toronto, Canada
Contact:

Re: replacing front and rear transmission mounts on 97 SSEi

Post by repinS »

That front trans mount was a lot worse than mine, which only separated here:

Image
Image
Jerry /// Past: 95 SSEi (June 2010 COTM) -- 04 GXP (July 2011 COTM)
91 Honda Civic Wagon DX 2WD (fuelly) -- 208,000km -- 92hp -- Autocross Warrior
09 Lexus LS460 AWD -- 94,000km -- Daily Driver
09 White Hot G8 GT -- 155,000km (fuelly) -- LS3 Cam -- GM LS3 CNC Ported Heads -- Kooks 1 3/4" Long Tube Headers -- Solo Catback Midsection -- Hooker Maxflow Mufflers -- Pat G Tune -- Rotofab Intake -- Tein S-Tech Springs -- GXP FE3 Dampers -- BMR Subframe Cradle Inserts -- BMR Subframe Connectors -- Forgestar F14 Gold 18x9 +40 -- Michelin Pilot Super Sport 245/45/18 -- Maverick Man Carbon Fiber Spoiler
User avatar
harofreak00
Administrator
Administrator
Posts: 26022
Joined: Mon May 19, 2008 6:04 pm
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
Location: Browerville, MN
Contact:

Re: replacing front and rear transmission mounts on 97 SSEi

Post by harofreak00 »

Did that bolt shear or what? That rubber piece is supposed to be floppy in there. Not sure why, but thats how the new one was.
Andrew - owner/operator of Bonnevilles Unlimited
Image
2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 115k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 280k | Official Bonneville Hauler
User avatar
repinS
Moderator
Moderator
Posts: 7391
Joined: Mon May 19, 2008 9:51 pm
Year and Trim: 09 G8 GT
Location: Toronto, Canada
Contact:

Re: replacing front and rear transmission mounts on 97 SSEi

Post by repinS »

Really? The one that came out was nice and floppy, the Anchor that went in was solid.

ruh roh... did I replace a perfectly good mount or did you put in an already-broken one? :o
Last edited by repinS on Thu Apr 16, 2009 7:19 pm, edited 1 time in total.
Image
Jerry /// Past: 95 SSEi (June 2010 COTM) -- 04 GXP (July 2011 COTM)
91 Honda Civic Wagon DX 2WD (fuelly) -- 208,000km -- 92hp -- Autocross Warrior
09 Lexus LS460 AWD -- 94,000km -- Daily Driver
09 White Hot G8 GT -- 155,000km (fuelly) -- LS3 Cam -- GM LS3 CNC Ported Heads -- Kooks 1 3/4" Long Tube Headers -- Solo Catback Midsection -- Hooker Maxflow Mufflers -- Pat G Tune -- Rotofab Intake -- Tein S-Tech Springs -- GXP FE3 Dampers -- BMR Subframe Cradle Inserts -- BMR Subframe Connectors -- Forgestar F14 Gold 18x9 +40 -- Michelin Pilot Super Sport 245/45/18 -- Maverick Man Carbon Fiber Spoiler
User avatar
harofreak00
Administrator
Administrator
Posts: 26022
Joined: Mon May 19, 2008 6:04 pm
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
Location: Browerville, MN
Contact:

Re: replacing front and rear transmission mounts on 97 SSEi

Post by harofreak00 »

Probably why you gained a rubbing noise, LOL.
Andrew - owner/operator of Bonnevilles Unlimited
Image
2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 115k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 280k | Official Bonneville Hauler
User avatar
mntnbkr
GXP Member
GXP Member
Posts: 229
Joined: Sun Mar 22, 2009 1:46 pm
Year and Trim: '99 SSEi
Location: Fenton, MI

Re: replacing front and rear transmission mounts on 97 SSEi

Post by mntnbkr »

harofreak, be sure to check out my post on the TAM if you haven't already. Be careful or you might end up with a hell-of-a-lot more job than you bargained for.

viewtopic.php?f=19&t=10413

Nevermind... I just scrolled through that thread and you were quite active posting on that topic, so you know what I went through.

Anyway, if those bolts start to "slip-stick" when you're removing them be VERY careful as this is when mine broke. However, only one of them broke, but both sounded like they were going to. I'd say to throw some heat on it to loosen up the bolts, but you'd have to move quite a few wires, hoses, and AC lines to avoid damaging them.

I don't know, I think if I were you, and since you already have the part, I'd try replacing the rear trans mount before effing with the TAM. It really wasn't all that bad. If I had to do it again it would take 15-20 minutes and a beer.

Good luck!
~Adam
'99 SSEi
'02 Volvo S60 AWD 2.4T
'02 Jeep Liberty Sport
'89 Chaparral 187XL w/ 4.3L I/O Mercruiser
'00 Cannondale Jekyll 900SX
Follow me on twitter: adumb
User avatar
harofreak00
Administrator
Administrator
Posts: 26022
Joined: Mon May 19, 2008 6:04 pm
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
Location: Browerville, MN
Contact:

Re: replacing front and rear transmission mounts on 97 SSEi

Post by harofreak00 »

Surprisingly my TAM came out really easy. I did the 2 15mm bolts from under the car first and then the ones on the top. I was able to slide it right out of there.

Since its already ordered, I may as well install it. I also ordered the dogbone mount. So basically, I will be able to replace all 4 mounts. If its still grinding after that I'm throwing the car in my garbage can.
Andrew - owner/operator of Bonnevilles Unlimited
Image
2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 115k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 280k | Official Bonneville Hauler
myfirstbonnie
Resident Gearhead
Resident Gearhead
Posts: 5530
Joined: Mon May 19, 2008 10:19 pm
Year and Trim: .
2015 Buick Enclave
2013 Buick Regal GS
Location: Hillsboro, Oregon

Re: replacing front and rear transmission mounts on 97 SSEi

Post by myfirstbonnie »

I have a receptical you can throw it in. LOL
Post Reply