Tranny mounts? - FIXED IT- - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 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 and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-23-2005, 06:47 PM   #1
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Default Tranny mounts? - FIXED IT-

I get a pop noise when I put it in gear, and most times when I start moving from a stop. My best guess is a broken tranny mount. How hard and how expensive are they?
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Old 01-23-2005, 07:02 PM   #2
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Very easy to change. I changed the transaxle in my car, so I got very well acquainted with anything I had to unbolt. There are 3 mounts for the engine and transaxle -- 2 rear, 1 front. The front mount looks like a mini shock absorber (it is, really). Attaches to the block with several bolts, and then also has I think 2 studs w/ nuts through the subframe. The pass. side rear mount is a dog bone. Very easy to change, it has a bolt through each end of the dog bone. The drivers side rear mount is a self-limiting style rubber block, which has I think 3 bolts into the transaxle, and 2 studs w/ nuts through the subframe. You'll need an open end wrench to get at the bolts that go into the trans. case, there is not much room here.

All in all, it shouldn't take more than 1 hour to change a mount. It would probably take 30 minutes. All you have to do to change any of the mounts is get a piece of plywood and a floor jack to unload the mounts so you can remove one.
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Old 01-23-2005, 08:59 PM   #3
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Cool. Are there other possibilities for what is making that pop that I should look for?
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Old 01-23-2005, 11:35 PM   #4
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Yep, if your car has a lot of miles (or maybe not so many miles, with a lot of hard driving) sloppy CV axles can cause a pop when going from forward to reverse, or from park into a gear. There was a gentleman on this board who provided me with this information, when I was also asking questions about CV axles possibly causing my high speed vibration. It'* worth looking into considering that reman cv axles are also inexpensive and not hard to change.
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Old 01-29-2005, 02:11 PM   #5
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Would it be a good idea to swap from my 93 SE parts car or just get new ones? If I swap, I can have both cars up, see what I need from mine, then pilfer. New CV'* are probably a better idea than swaping, correct?
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Old 01-30-2005, 06:12 PM   #6
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I checked Autozone for CV'*. 80 apiece, is that a good price for remanned?
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Old 01-30-2005, 06:27 PM   #7
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yeah thats a good price
as for the tranny mount you have to jack up the tranny when installing the new one
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Old 01-30-2005, 08:01 PM   #8
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I have a similar problem. It only happens when I first start the car after it has been sitting a while. Basically, it makes that clunk noise when everything is still kind of cold. Could this be a mount or CV still?
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Old 01-30-2005, 08:41 PM   #9
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Mine doens't clunk when I start the car, just putting it in gear or starting to move. My guess would lean toward motor mount.
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Old 04-25-2005, 06:22 PM   #10
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Well, I pretty much fixed it. I was under White Whine today to change the oil, and got to poking around. Saw a tranny mount in the area the sound seems to come from. Hmm, I thought. Thought I'd hit it with my fist. POP POP!! Upon close inspection, I see the frame end of the mount has slotted holes and the nut and bolt showed most definate sliding marks. Tighened it up real nice like. Now I can only coax a pop while moving and I give the gas a good punch, or let off abuptly. Nothing when I put it in gear or start moving. Makes me very happy. I had just made an appointment this morning to go to the dealership and have them find it. Should I still go to see if they can find anything else? I can still feel my engine rocking more than it probably should.
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