how much time to replace uim - Page 2 - 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 03-21-2007, 09:05 PM   #11
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Willwren, Thanks, for your input!!
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Old 03-21-2007, 11:35 PM   #12
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Those 5-6 hours will include 2 or 3 trips back to BC with questions. If you rule those out by research ahead of time, cut it to 3-4 hours.




A mere 9-beer job.
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Old 03-21-2007, 11:47 PM   #13
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It took me about 8 hours of really work. Then another 4 took track down a coolant out cover gasket that everone claimed did not exist.
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Old 03-22-2007, 09:04 AM   #14
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Prep and tools are key.

If you had a tub of parts cleaner.. you would remove the LIM and drop it in. While you are cleaning the gasket surfaces on the block and heads, the LIM would be self cleaning.

I use a 3m scotch brite cleaning pad on an airtool. Cleaning of heads/block and LIM gasket surfaces are now down to about 20 minutes in total. By hand..you could spend an hour or better.

Have the torque specs printed out and taped to a wall or something. Remembering that GM misprinted their FSM'* for a few years and the UIM torque is less than the LIM torque.
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Old 03-22-2007, 04:54 PM   #15
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Quote:
Originally Posted by VillianVille
Bill, Thanks for the help!! How long do you think that it would take to do just the top?
I'm 53 years old and with my wife holding the trouble lite, 2 grand kids complaining, and a 9 month old 100lbs.black lab barking I don't think I could do the lower without FLIPPING OUT and having AAA towing it to the junk yard half-way thru the job!
Doing the LIM while you have it all apart anyway, really will not add much more to the job. It really is easier than you think. Not hard at all.
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Old 03-22-2007, 05:29 PM   #16
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It took me 9 hours to do both the UIM and LIM. Where in Pgh? I am in Morgantown.
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Old 03-22-2007, 05:43 PM   #17
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2 bonnies, thank you for your input!!! I live in Natrona hgts. it'* about 25 miles NE of Pgh. I would also like to THANK everyone who responded to my post!!! I'm on my 3rd Bonneville (87-93-96) and I only wish that I found out about this club earlier! Thanks ,Bob.
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Old 03-22-2007, 06:27 PM   #18
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Bob, it really isn't all that much more work for the LIM. You'll be doing everything again sometime in the near future to replace the LIM gasket if you don't do it now. May as well get all the "pain" out of the way at one time. I'm older than you are with similar distractions (no Lab) and managed to accomplish it. Set aside a weekend to do it, so you can take breaks and work at a leisurely pace. You'll have all the help that you need for clarification on any problems right here. You'll kick yourself later, if you don't.
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Old 03-23-2007, 01:53 AM   #19
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myself <-----...and a mechanic i paid broke it down to the LIM gaskets down in about 25 minutes ...so think about that in reverse. it will probably take a little longer being meticulous as you go. i would say about 2 hours at the most.
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