Harmonic Balancer nightmare...Ohhh no, it ain't over. - 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 08-17-2006, 10:04 AM   #1
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Default Harmonic Balancer nightmare...Ohhh no, it ain't over.

:( Mine decided to give me crap a couple days ago. One more thing to fix! Everyone likes to stare at me when my car is idling.

I did some searching, probably not enough, but I'm at work now so I can't I'm just looking for any advice/help. I know they can run around $120. Is GMPD the best place?Thanks.

Bill, thanks for the phone call...if there'* anything else I should know, tell me. I forgot some things we talked about.
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Old 08-17-2006, 12:05 PM   #2
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I recently replaced mine. I had access to an air impact wrench which made removal of the bolt easy in that I didn't have to block the flywheel to keep the crank from turning. The impact wrench did take quite a few hits to get it to loosen and I was beginning to wonder if it was going to come out or not but it finally came out.

Access is gained by removing the passenger side tire and moving the inner splash shield.

The second thing is actually pulling the HB. I picked up mine at AutoZone for around $80 someodd and used their loan of a puller. Just as everyone has said in a lot of posts on this topic, the bolts that come standard with the puller are all too big for our HB'*. You need fine thread 6mm bolts or in a pinch fine thread 1/4 in bolts if I remember right about 3 inches long. Again, the impact wrench made short work of pulling the balancer right off.

When installing the new one, I was unable to remove the existing key, which didn't cause any problems, but I didn't get a positive solid feel that I had the new HB aligned on the crank. You have to use the bolt to the crank to pull the new HB back onto the crank. I believe the torque is listed in the Techinfo section here.

Others may have better advice, but that was my experience. Good luck!
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Old 08-17-2006, 12:20 PM   #3
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Pete...I've pulled my balancer ..

Cruise up when you get the new one. It'* a 30 minute job w/that new impact of mine.
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Old 08-17-2006, 12:55 PM   #4
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Boosty is right, it'* not that big of a job, especially if you have a few tools to make your life easier, AND someone who has been there and done that before to help. Sounds like a wonderful offer.
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Old 08-17-2006, 02:59 PM   #5
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Quote:
Originally Posted by BillBoost37
Pete...I've pulled my balancer ..

Cruise up when you get the new one. It'* a 30 minute job w/that new impact of mine.
you just gotta get the "special" bolts for the advance puller....LMAO
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Old 08-17-2006, 09:16 PM   #6
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Special bolts eh?
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Old 08-17-2006, 11:22 PM   #7
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Pete...we'll have em
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Old 08-20-2006, 05:12 PM   #8
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So...went to Boost'* Saturday. Went to Advance to pick up the new HB. I notice it does not have grooves for the outside belt. Hmmmm, that can't be right. So we go back and get ready to take the old HB off.

"Holy ****!!" were the words that came out of my mouth. Boost came over to look at my HB, and repeated my expression. I never saw a failing HB before, but it looked like someone took a saw and went around the whole diameter of the rubber. I could see straight through it.

Anyway, the HB from Advance was definitely wrong, we took it back and ordered another one. They had the NA Bonne and SC with the same part number This AM we go back since the part took a day to get there. STILL the wrong one. The right one should be in tomorrow.

I am guessing the 94 and 95 HB is exactly the same...and the 93 as well. The PN on the HB coming tomorrow refers to the OEM part number on a 95 SC'd car. The 93 and 94 PN is the same dealer PN.
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Old 08-20-2006, 07:02 PM   #9
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Pic of a very bad harmonic balancer.



It was quite loud.
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Old 08-20-2006, 08:14 PM   #10
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That'* exactly what mine looked like when it went bad.
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